Replace AudioFile with AudioTrack, fix download+orphan+MD5 sync, always play original audio fallback

AudioTrack table replaces AudioFile (Filename, Name, AssignedFrequency,
MD5, Selected, Order) — fixes relative-path bug in scrollerPage.go that
caused "file not found" for single-track selection.

Download goroutine now:
  - Accepts *gorm.DB and updates AudioTrack.MD5 after each download.
  - Treats checksums.md5 as source of truth: removes local files and DB
    records not in the manifest (orphans).
  - Strips "./" prefix from manifest filenames (GNU md5sum format).

AudioOptions.go seeds 14 AudioTrack records matching server checksums.md5.
List background quad width matches the widest item (+ padding), centered.

scrollerPage.go switchAudioForFrequency falls back to original/selected
audio when a frequency has no matching track or file.  playOriginalAudio
is a no-op on repeat calls to avoid 5-second audio restart loop.

Fixes progress display: passes Max=0 during downloads so Home page shows
"x / X Files Downloaded" text instead of bogus "100.0%" percentage.

Downstream audio switching (DynamicAudio) verifies an AudioTrack exists
for the frequency before assigning it to a stream — frequencies without
a track (e.g. 528 Hz) gracefully use original audio instead.

internal/application/application.go

@@ -195,7 +195,7 @@ func Run() {
 		}
 	}
 
-	go download.DownloadAudioFiles(app.PageRouter.Context.MessageChannel, audioDir, "https://files.radiantwavetech.com/audio/")
+	go download.DownloadAudioFiles(app.PageRouter.Context.MessageChannel, app.DB, audioDir, "https://files.radiantwavetech.com/audio/")
 
 	app.runEventLoop()
 }

internal/db/DB.go

@@ -107,6 +107,6 @@ func Migrate(db *gorm.DB) error {
 		&Proclamation{},
 		&ProclamationCategory{},
 		&SolfeggioFrequency{},
-		&AudioFile{},
+		&AudioTrack{},
 	)
 }

internal/db/Schema.go

@@ -50,10 +50,12 @@ type SolfeggioFrequency struct {
 	Value int
 }
 
-type AudioFile struct {
-	ID       int `gorm:"primaryKey"`
-	Name     string
-	Path     string
-	Selected bool
-	Order    int
+type AudioTrack struct {
+	ID                int `gorm:"primaryKey"`
+	Filename          string
+	Name              string
+	AssignedFrequency int
+	MD5               string
+	Selected          bool
+	Order             int
 }

internal/download/Download.go

@@ -10,6 +10,8 @@ import (
 	"path/filepath"
 	"strings"
 
+	"gorm.io/gorm"
+	"rhemawavetech.com/rhemawave/internal/db"
 	"rhemawavetech.com/rhemawave/internal/logger"
 )
 
@@ -25,36 +27,36 @@ type DownloadStatus struct {
 // manifest maps filename → expected MD5 hex string
 type manifest map[string]string
 
-// ─── Server script to generate checksums.md5 ─────────────────────────────────
-//
-// Run this on your file server whenever you add or replace audio files:
-//
-//   cd /path/to/audio && md5sum *.mp3 > checksums.md5
-//
-// That's it. The app will pick up changes automatically on next run.
-// ─────────────────────────────────────────────────────────────────────────────
-
 const manifestFilename = "checksums.md5"
 
-// DownloadAudioFiles downloads audio files, skipping any that already exist
-// locally with a matching MD5. Files with a wrong checksum are deleted and
-// re-downloaded. Progress is sent to progressChan, which is closed on return.
-func DownloadAudioFiles(progressChan chan<- DownloadStatus, destDir string, urlBase string) {
+// DownloadAudioFiles downloads audio files using the remote checksums.md5 as
+// the source of truth. It:
+//   - Downloads any file in the manifest that is missing locally.
+//   - Re-downloads files whose local MD5 differs from the manifest.
+//   - Removes local files not listed in the manifest (orphans).
+//   - Removes DB AudioTrack records not listed in the manifest.
+//   - Updates AudioTrack.MD5 in the database after every successful download.
+//
+// Progress is sent to progressChan, which is closed on return.
+func DownloadAudioFiles(progressChan chan<- DownloadStatus, dbHandle *gorm.DB, destDir string, urlBase string) {
 	defer close(progressChan)
 
-	send := func(cur, max int64, msg string, err error) {
-		progressChan <- DownloadStatus{Cur: cur, Max: max, Msg: msg, Err: err}
+	var totalDownloaded int64
+	var filesDownloaded int
+
+	send := func(cur int64, msg string, err error) {
+		progressChan <- DownloadStatus{Cur: cur, Max: 0, Msg: msg, Err: err}
 	}
 
-	send(0, 0, "Fetching file manifest...", nil)
+	send(0, "Fetching file manifest...", nil)
 	m, err := fetchManifest(urlBase + manifestFilename)
 	if err != nil {
-		send(0, 0, "Failed to fetch manifest", err)
+		send(0, "Failed to fetch manifest", err)
 		return
 	}
 	logger.Info("download: manifest loaded, %d files listed", len(m))
 
-	send(0, 0, "Comparing checksums...", nil)
+	send(0, "Comparing checksums...", nil)
 
 	type work struct {
 		filename    string
@@ -82,19 +84,47 @@ func DownloadAudioFiles(progressChan chan<- DownloadStatus, destDir string, urlB
 		}
 	}
 
+	// ── Remove local files not in manifest (orphans) ─────────────────────
+	entries, err := os.ReadDir(destDir)
+	if err == nil {
+		for _, entry := range entries {
+			if entry.IsDir() {
+				continue
+			}
+			if _, ok := m[entry.Name()]; !ok {
+				orphanPath := filepath.Join(destDir, entry.Name())
+				logger.Info("download: removing orphan file %s", orphanPath)
+				if err := os.Remove(orphanPath); err != nil {
+					logger.Warning("download: failed to remove orphan %s: %v", orphanPath, err)
+				}
+			}
+		}
+	} else {
+		logger.Warning("download: could not read destDir for orphan cleanup: %v", err)
+	}
+
+	// ── Remove DB records not in manifest ────────────────────────────────
+	if dbHandle != nil {
+		var allTracks []db.AudioTrack
+		dbHandle.Find(&allTracks)
+		for _, track := range allTracks {
+			if _, ok := m[track.Filename]; !ok {
+				logger.Info("download: removing orphan DB record %s (filename=%s)", track.Name, track.Filename)
+				dbHandle.Delete(&track)
+			}
+		}
+	}
+
 	if len(queue) == 0 {
-		send(0, 0, "All files are up to date.", nil)
+		send(0, "All files are up to date.", nil)
 		logger.Info("download: nothing to do")
 		return
 	}
 
 	total := len(queue)
-	send(0, 0, fmt.Sprintf("0 / %d Files Downloaded", total), nil)
+	send(0, fmt.Sprintf("0 / %d Files Downloaded", total), nil)
 	logger.Info("download: %d file(s) to download", total)
 
-	totalDownloaded := int64(0)
-	filesDownloaded := 0
-
 	for _, w := range queue {
 		url := urlBase + w.filename
 		destPath := filepath.Join(destDir, w.filename)
@@ -103,12 +133,12 @@ func DownloadAudioFiles(progressChan chan<- DownloadStatus, destDir string, urlB
 
 		downloaded, err := downloadFile(url, destPath, func(n int64) {
 			totalDownloaded += n
-			send(totalDownloaded, 0, fmt.Sprintf("%d / %d Files Downloaded", filesDownloaded, total), nil)
+			send(totalDownloaded, fmt.Sprintf("%d / %d Files Downloaded", filesDownloaded, total), nil)
 		})
 
 		if err != nil {
 			logger.Error("download: failed to download %s: %v", w.filename, err)
-			send(totalDownloaded, 0, fmt.Sprintf("%d / %d Files Downloaded", filesDownloaded, total), err)
+			send(totalDownloaded, fmt.Sprintf("%d / %d Files Downloaded", filesDownloaded, total), err)
 			return
 		}
 
@@ -116,24 +146,35 @@ func DownloadAudioFiles(progressChan chan<- DownloadStatus, destDir string, urlB
 		if err != nil {
 			logger.Error("download: could not hash %s after download: %v", w.filename, err)
 			os.Remove(destPath)
-			send(totalDownloaded, 0, "Checksum verification failed", err)
+			send(totalDownloaded, "Checksum verification failed", err)
 			return
 		}
 		if gotMD5 != w.expectedMD5 {
 			err := fmt.Errorf("checksum mismatch after download: got %s, want %s", gotMD5, w.expectedMD5)
 			logger.Error("download: %s %v", w.filename, err)
 			os.Remove(destPath)
-			send(totalDownloaded, 0, "Checksum verification failed — file removed", err)
+			send(totalDownloaded, "Checksum verification failed — file removed", err)
 			return
 		}
 
+		// Update MD5 in database
+		if dbHandle != nil {
+			var track db.AudioTrack
+			result := dbHandle.Where("filename = ?", w.filename).First(&track)
+			if result.Error == nil {
+				track.MD5 = gotMD5
+				dbHandle.Save(&track)
+				logger.Debug("download: updated MD5 for %s", w.filename)
+			}
+		}
+
 		filesDownloaded++
 		statusMsg := fmt.Sprintf("%d / %d Files Downloaded", filesDownloaded, total)
 		logger.Info("download: %s (%d bytes)", statusMsg, downloaded)
-		send(totalDownloaded, 0, statusMsg, nil)
+		send(totalDownloaded, statusMsg, nil)
 	}
 
-	send(totalDownloaded, totalDownloaded, "All downloads complete!", nil)
+	send(totalDownloaded, "All downloads complete!", nil)
 	logger.Info("download: all files downloaded and verified")
 }
 
@@ -167,6 +208,7 @@ func fetchManifest(url string) (manifest, error) {
 		}
 		hash := strings.TrimSpace(parts[0])
 		name := strings.TrimSpace(parts[1])
+		name = strings.TrimPrefix(name, "./")
 		m[name] = hash
 	}
 

internal/download/download_test.go

@@ -0,0 +1,180 @@
+package download_test
+
+import (
+	"crypto/md5"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+	"rhemawavetech.com/rhemawave/internal/db"
+	"rhemawavetech.com/rhemawave/internal/download"
+)
+
+func md5Hex(data []byte) string {
+	return fmt.Sprintf("%x", md5.Sum(data))
+}
+
+// TestDownloadFileHashChanged verifies that when the server manifest reports a
+// new MD5 for an existing local file, the old file is removed, the new version
+// is downloaded, and the database record is updated with the new hash.
+func TestDownloadFileHashChanged(t *testing.T) {
+	audioDir := t.TempDir()
+	dbDir := t.TempDir()
+
+	gdb, err := gorm.Open(sqlite.Open(filepath.Join(dbDir, "test.db")), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	sqlDB, err := gdb.DB()
+	if err != nil {
+		t.Fatal(err)
+	}
+	sqlDB.SetMaxOpenConns(1)
+	sqlDB.SetMaxIdleConns(1)
+
+	if err := gdb.AutoMigrate(&db.AudioTrack{}); err != nil {
+		t.Fatal(err)
+	}
+
+	oldContent := []byte("this is the OLD version of the audio file")
+	oldMD5 := md5Hex(oldContent)
+	newContent := []byte("this is the NEW version of the audio file")
+	newMD5 := md5Hex(newContent)
+
+	track := db.AudioTrack{
+		Filename:          "174Hz.wav",
+		Name:              "174 Hz",
+		AssignedFrequency: 174,
+		MD5:               oldMD5,
+		Selected:          true,
+		Order:             2,
+	}
+	if err := gdb.Create(&track).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	oldPath := filepath.Join(audioDir, "174Hz.wav")
+	if err := os.WriteFile(oldPath, oldContent, 0644); err != nil {
+		t.Fatal(err)
+	}
+
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/checksums.md5":
+			w.WriteHeader(http.StatusOK)
+			fmt.Fprintf(w, "%s  174Hz.wav\n", newMD5)
+		case "/174Hz.wav":
+			w.WriteHeader(http.StatusOK)
+			w.Write(newContent)
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	progress := make(chan download.DownloadStatus, 100)
+	done := make(chan struct{})
+	go func() {
+		download.DownloadAudioFiles(progress, gdb, audioDir, server.URL+"/")
+		close(done)
+	}()
+	for range progress {
+	}
+	<-done
+
+	newPath := filepath.Join(audioDir, "174Hz.wav")
+	gotContent, err := os.ReadFile(newPath)
+	if err != nil {
+		t.Fatalf("reading new file: %v", err)
+	}
+	if string(gotContent) != string(newContent) {
+		t.Errorf("new file content = %q, want %q", string(gotContent), string(newContent))
+	}
+
+	var updated db.AudioTrack
+	if err := gdb.First(&updated, track.ID).Error; err != nil {
+		t.Fatalf("fetching updated track: %v", err)
+	}
+	if updated.MD5 != newMD5 {
+		t.Errorf("DB MD5 = %q, want %q", updated.MD5, newMD5)
+	}
+}
+
+// TestDownloadOrphanRemoval verifies that files and DB records not in the
+// manifest are removed.
+func TestDownloadOrphanRemoval(t *testing.T) {
+	audioDir := t.TempDir()
+	dbDir := t.TempDir()
+
+	gdb, err := gorm.Open(sqlite.Open(filepath.Join(dbDir, "test.db")), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	sqlDB, err := gdb.DB()
+	if err != nil {
+		t.Fatal(err)
+	}
+	sqlDB.SetMaxOpenConns(1)
+	sqlDB.SetMaxIdleConns(1)
+
+	if err := gdb.AutoMigrate(&db.AudioTrack{}); err != nil {
+		t.Fatal(err)
+	}
+
+	orphanPath := filepath.Join(audioDir, "orphan.wav")
+	if err := os.WriteFile(orphanPath, []byte("orphan"), 0644); err != nil {
+		t.Fatal(err)
+	}
+
+	gdb.Create(&db.AudioTrack{Filename: "ghost.wav", Name: "Ghost Track", Order: 99})
+
+	keptContent := []byte("kept file")
+	keptMD5 := md5Hex(keptContent)
+	keptPath := filepath.Join(audioDir, "kept.wav")
+	if err := os.WriteFile(keptPath, keptContent, 0644); err != nil {
+		t.Fatal(err)
+	}
+
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/checksums.md5":
+			w.WriteHeader(http.StatusOK)
+			fmt.Fprintf(w, "%s  kept.wav\n", keptMD5)
+		case "/kept.wav":
+			w.WriteHeader(http.StatusOK)
+			w.Write(keptContent)
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	progress := make(chan download.DownloadStatus, 100)
+	done := make(chan struct{})
+	go func() {
+		download.DownloadAudioFiles(progress, gdb, audioDir, server.URL+"/")
+		close(done)
+	}()
+	for range progress {
+	}
+	<-done
+
+	if _, err := os.Stat(orphanPath); !os.IsNotExist(err) {
+		t.Errorf("orphan file %s should have been removed", orphanPath)
+	}
+
+	var count int64
+	gdb.Model(&db.AudioTrack{}).Where("filename = ?", "ghost.wav").Count(&count)
+	if count != 0 {
+		t.Errorf("orphan DB record ghost.wav should have been deleted, count=%d", count)
+	}
+
+	if _, err := os.Stat(keptPath); os.IsNotExist(err) {
+		t.Errorf("kept file %s should still exist after download", keptPath)
+	}
+}

internal/page/AudioOptions.go

@@ -17,25 +17,25 @@ import (
 
 const focusToggle = -1
 
-var AudioFileList = []db.AudioFile{
-	{ID: 14, Name: "Original Audio", Path: "OriginalAudio.wav", Selected: false, Order: 1},
-	{ID: 1, Name: "174 Hz", Path: "174Hz.wav", Selected: false, Order: 2},
-	{ID: 2, Name: "396 Hz", Path: "396Hz.wav", Selected: false, Order: 3},
-	{ID: 3, Name: "417 Hz", Path: "417Hz.wav", Selected: false, Order: 4},
-	{ID: 4, Name: "432 Hz", Path: "432Hz.wav", Selected: false, Order: 5},
-	{ID: 5, Name: "639 Hz", Path: "639Hz.wav", Selected: false, Order: 6},
-	{ID: 6, Name: "741 Hz", Path: "741Hz.wav", Selected: false, Order: 7},
-	{ID: 7, Name: "852 Hz", Path: "852Hz.wav", Selected: false, Order: 8},
-	{ID: 8, Name: "963 Hz", Path: "963Hz.wav", Selected: false, Order: 9},
-	{ID: 9, Name: "1111 Hz", Path: "1111Hz.wav", Selected: false, Order: 10},
-	{ID: 10, Name: "14 Hz Binaural Beat", Path: "14Hz_Binaural.wav", Selected: false, Order: 11},
-	{ID: 11, Name: "40 Hz Binaural Beat", Path: "40Hz_Binaural.wav", Selected: false, Order: 12},
-	{ID: 12, Name: "Alpha Waves", Path: "AlphaWaves.wav", Selected: false, Order: 13},
-	{ID: 13, Name: "Pineal Gland", Path: "PinealGland.wav", Selected: false, Order: 14},
-}
-
 const triangleSize = float32(16)
 
+var audioTrackSeed = []db.AudioTrack{
+	{Filename: "OriginalAudio.wav", Name: "Original Audio", AssignedFrequency: 0, MD5: "d39c2676c315438752ab0c55e9427d74", Order: 1},
+	{Filename: "174Hz.wav", Name: "174 Hz", AssignedFrequency: 174, MD5: "42abaf332e628b646ac2cc9d1b5385e7", Order: 2},
+	{Filename: "396Hz.wav", Name: "396 Hz", AssignedFrequency: 396, MD5: "d53d45849b042122a3c177fad95ff499", Order: 3},
+	{Filename: "417Hz.wav", Name: "417 Hz", AssignedFrequency: 417, MD5: "056a7aae0b53111f5c568ea7ecd1fadb", Order: 4},
+	{Filename: "432Hz.wav", Name: "432 Hz", AssignedFrequency: 432, MD5: "276c57179372404ff59c35024911468e", Order: 5},
+	{Filename: "639Hz.wav", Name: "639 Hz", AssignedFrequency: 639, MD5: "4e460148230f4417fef39e9817f75e06", Order: 6},
+	{Filename: "741Hz.wav", Name: "741 Hz", AssignedFrequency: 741, MD5: "cfbd9b03b539db69bcefdd91cedc9ad1", Order: 7},
+	{Filename: "852Hz.wav", Name: "852 Hz", AssignedFrequency: 852, MD5: "485700296d017f8a1b0a7583a55a7783", Order: 8},
+	{Filename: "963Hz.wav", Name: "963 Hz", AssignedFrequency: 963, MD5: "2670e13294daef8490a862c078aa8af4", Order: 9},
+	{Filename: "1111Hz.wav", Name: "1111 Hz", AssignedFrequency: 1111, MD5: "67bbc7619dc21d0750519113472ca335", Order: 10},
+	{Filename: "14Hz_Binaural.wav", Name: "14 Hz Binaural Beat", AssignedFrequency: 14, MD5: "807c14866640d2ab27a6f5d7fdd24e77", Order: 11},
+	{Filename: "40Hz_Binaural.wav", Name: "40 Hz Binaural Beat", AssignedFrequency: 40, MD5: "42d60d55a16db4e9b29da47a5a102f2c", Order: 12},
+	{Filename: "AlphaWaves.wav", Name: "Alpha Waves", AssignedFrequency: 0, MD5: "07a93fa0e633a00d97b8a5e5a259d6ff", Order: 13},
+	{Filename: "PinealGland.wav", Name: "Pineal Gland", AssignedFrequency: 0, MD5: "998d74e3826b30086d64ff0df7b9f133", Order: 14},
+}
+
 type AudioOptions struct {
 	Base
 	font        *fontManager.FontEntry
@@ -51,6 +51,7 @@ type AudioOptions struct {
 	AudioStatusToggle StringItem
 
 	audioFileTextures []StringItem
+	audioTracks       []db.AudioTrack
 	selectedFileIndex int
 
 	VolumeLabel   StringItem
@@ -68,10 +69,8 @@ type AudioOptions struct {
 
 	focusState int
 
-	// Section header
 	sectionHeader StringItem
 
-	// Scrolling
 	scrollOffset     int
 	maxVisible       int
 	listItemMargin   int32
@@ -83,10 +82,8 @@ type AudioOptions struct {
 	scrollTrackY     int32
 	scrollTrackH     int32
 
-	// Selection dot
 	dotSize float32
 
-	// List left-alignment X (same for all items)
 	listLeftX int32
 }
 
@@ -158,8 +155,8 @@ func (p *AudioOptions) Init(ctx *PageCtx) error {
 		logger.Error("failed to create AudioStatusItem in AudioOptions.Init()")
 	}
 
-	if err = p.seedAudioFiles(); err != nil {
-		logger.Error("failed to seed audio files: %v", err)
+	if err = p.seedAudioTracks(); err != nil {
+		logger.Error("failed to seed audio tracks: %v", err)
 	}
 
 	p.buildAudioFileList()
@@ -195,6 +192,10 @@ func (p *AudioOptions) buildAudioFileList() {
 	}
 	p.audioFileTextures = nil
 
+	var tracks []db.AudioTrack
+	p.Context.DbPtr.Order("`order` ASC").Find(&tracks)
+	p.audioTracks = tracks
+
 	dynamicItem, err := NewStringItem("Dynamic Audio", p.font, colors.White)
 	if err != nil {
 		logger.Error("failed to create Dynamic Audio string item: %v", err)
@@ -203,10 +204,10 @@ func (p *AudioOptions) buildAudioFileList() {
 		p.audioFileTextures = append(p.audioFileTextures, dynamicItem)
 	}
 
-	for _, af := range AudioFileList {
-		item, err := NewStringItem(af.Name, p.font, colors.White)
+	for _, track := range tracks {
+		item, err := NewStringItem(track.Name, p.font, colors.White)
 		if err != nil {
-			logger.Error("failed to create audio file string item for %s: %v", af.Name, err)
+			logger.Error("failed to create audio track string item for %s: %v", track.Name, err)
 			continue
 		}
 		item.Scale(p.ItemScale)
@@ -228,14 +229,14 @@ func (p *AudioOptions) updateSelectedIndex() {
 		return
 	}
 
-	var selected db.AudioFile
+	var selected db.AudioTrack
 	if err := p.Context.DbPtr.Where("selected = ?", true).First(&selected).Error; err != nil {
 		p.selectedFileIndex = 0
 		return
 	}
 
-	for i, af := range AudioFileList {
-		if af.ID == selected.ID {
+	for i, track := range p.audioTracks {
+		if track.ID == selected.ID {
 			p.selectedFileIndex = i + 1
 			return
 		}
@@ -244,13 +245,13 @@ func (p *AudioOptions) updateSelectedIndex() {
 	p.selectedFileIndex = 0
 }
 
-func (p *AudioOptions) seedAudioFiles() error {
-	var existing []db.AudioFile
+func (p *AudioOptions) seedAudioTracks() error {
+	var existing []db.AudioTrack
 	if err := p.Context.DbPtr.Find(&existing).Error; err != nil {
 		return err
 	}
 	if len(existing) == 0 {
-		return p.Context.DbPtr.Save(&AudioFileList).Error
+		return p.Context.DbPtr.Save(&audioTrackSeed).Error
 	}
 	return nil
 }
@@ -284,13 +285,13 @@ func (p *AudioOptions) selectAudioFile(index int) {
 
 	if index == 0 {
 		config.DynamicAudio = true
-		p.Context.DbPtr.Model(&db.AudioFile{}).Where("1 = 1").Update("selected", false)
+		p.Context.DbPtr.Model(&db.AudioTrack{}).Where("1 = 1").Update("selected", false)
 	} else {
 		config.DynamicAudio = false
-		fileIndex := index - 1
-		if fileIndex >= 0 && fileIndex < len(AudioFileList) {
-			p.Context.DbPtr.Model(&db.AudioFile{}).Where("1 = 1").Update("selected", false)
-			p.Context.DbPtr.Model(&db.AudioFile{}).Where("id = ?", AudioFileList[fileIndex].ID).Update("selected", true)
+		trackIndex := index - 1
+		if trackIndex >= 0 && trackIndex < len(p.audioTracks) {
+			p.Context.DbPtr.Model(&db.AudioTrack{}).Where("1 = 1").Update("selected", false)
+			p.Context.DbPtr.Model(&db.AudioTrack{}).Where("id = ?", p.audioTracks[trackIndex].ID).Update("selected", true)
 		}
 	}
 
@@ -350,15 +351,12 @@ func (p *AudioOptions) layout() {
 		panic(err)
 	}
 
-	// Title
 	p.title.X = p.ScreenCenterX - p.title.W/2
 	p.title.Y = p.ScreenHeight - p.title.H - p.verticalMargin*2
 
-	// Prompt
 	p.prompt.X = p.ScreenCenterX - p.prompt.W/2
 	p.prompt.Y = p.title.Y - p.verticalMargin - p.prompt.H
 
-	// Volume row
 	barH := int32(float32(config.StandardFontSize) * p.ItemScale)
 	barW := int32(float32(p.ScreenWidth) * 0.30)
 	barX := p.ScreenCenterX - barW/2
@@ -376,20 +374,16 @@ func (p *AudioOptions) layout() {
 	p.volumePercent.X = barX + barW + gap
 	p.volumePercent.Y = barY + (barH-p.volumePercent.H)/2
 
-	// Audio toggle
 	p.AudioStatusToggle.X = p.ScreenCenterX - p.AudioStatusToggle.W/2
 	p.AudioStatusToggle.Y = barY - p.verticalMargin*3 - p.AudioStatusToggle.H
 
-	// Section header — sits above the toggle, marks the start of the audio track list
 	p.sectionHeader.X = p.ScreenCenterX - p.sectionHeader.W/2
 	p.sectionHeader.Y = p.AudioStatusToggle.Y - p.verticalMargin - p.sectionHeader.H
 
-	// Scrollable list area boundaries
 	p.listItemHeight = p.audioFileTextures[0].H
 	listTop := p.sectionHeader.Y - p.listItemMargin
 	listBottomMargin := int32(12)
 
-	// Available height for the list
 	listH := listTop - listBottomMargin
 	if listH < p.listItemHeight {
 		listH = p.listItemHeight
@@ -398,7 +392,6 @@ func (p *AudioOptions) layout() {
 	p.listAreaTop = listTop
 	p.listAreaBottom = listBottomMargin
 
-	// How many items fit
 	itemStep := p.listItemHeight + p.listItemMargin
 	n := len(p.audioFileTextures)
 	p.maxVisible = int(listH / itemStep)
@@ -409,16 +402,15 @@ func (p *AudioOptions) layout() {
 		p.maxVisible = n
 	}
 
-	// Compute left alignment: find the widest item to center the block
 	var maxItemW int32
 	for i := range p.audioFileTextures {
-		if p.audioFileTextures[i].W > maxItemW {
-			maxItemW = p.audioFileTextures[i].W
+		w := p.audioFileTextures[i].W
+		if w > maxItemW {
+			maxItemW = w
 		}
 	}
 	p.listLeftX = p.ScreenCenterX - maxItemW/2
 
-	// Position each item — scrollOffset shifts the whole list up/down
 	firstVisibleY := p.listAreaTop - p.listItemHeight
 	for i := range p.audioFileTextures {
 		item := &p.audioFileTextures[i]
@@ -426,7 +418,6 @@ func (p *AudioOptions) layout() {
 		item.Y = firstVisibleY - int32(i-p.scrollOffset)*itemStep
 	}
 
-	// Clamp scroll offset so we never show empty space
 	maxScroll := n - p.maxVisible
 	if maxScroll < 0 {
 		maxScroll = 0
@@ -435,7 +426,6 @@ func (p *AudioOptions) layout() {
 		p.scrollOffset = maxScroll
 	}
 
-	// Scrollbar track position
 	p.scrollTrackY = p.listAreaBottom
 	p.scrollTrackH = p.listAreaTop - p.listAreaBottom
 
@@ -678,19 +668,25 @@ func (p *AudioOptions) Render() error {
 		return fmt.Errorf("render audio toggle: %w", err)
 	}
 
-	// Section header
 	p.RenderTexture(p.textShader, p.sectionHeader.ID, p.sectionHeader.Position(), p.sectionHeader.RawDimensions(), p.sectionHeader.Color)
 
-	// List background
-	listBgColor := sdl.Color{R: 255, G: 255, B: 255, A: 12}
+	// List background — centered width matching widest item + padding
+	var maxItemW int32
+	for i := range p.audioFileTextures {
+		w := p.audioFileTextures[i].W
+		if w > maxItemW {
+			maxItemW = w
+		}
+	}
 	bgPad := int32(16)
-	bgLeft := float32(p.listLeftX - bgPad)
+	bgW := maxItemW + 2*bgPad
+	bgLeft := float32(p.ScreenCenterX) - float32(bgW)/2
 	bgTop := float32(p.listAreaBottom)
-	bgRight := float32(p.scrollTrackX)
 	bgBottom := float32(p.listAreaTop)
+	listBgColor := sdl.Color{R: 255, G: 255, B: 255, A: 12}
 	p.RenderSolidColorQuad(p.solidShader,
 		mgl32.Vec2{bgLeft, bgTop},
-		mgl32.Vec2{bgRight - bgLeft, bgBottom - bgTop},
+		mgl32.Vec2{float32(bgW), bgBottom - bgTop},
 		listBgColor)
 
 	// Audio file list (visible window only)
@@ -705,7 +701,6 @@ func (p *AudioOptions) Render() error {
 			return fmt.Errorf("render audio file %d: %w", i, err)
 		}
 
-		// Selection dot — small filled circle left of the item name
 		if i == p.selectedFileIndex {
 			dotX := float32(item.X) - p.dotSize - 6
 			dotY := float32(item.Y) + float32(item.H)/2 - p.dotSize/2
@@ -714,13 +709,10 @@ func (p *AudioOptions) Render() error {
 				mgl32.Vec2{p.dotSize, p.dotSize},
 				colors.Green)
 		}
-
 	}
 
-	// Scrollbar
 	p.renderScrollbar()
 
-	// Spinning triangle cursor — always on top
 	if err := p.renderCursor(); err != nil {
 		return fmt.Errorf("render cursor: %w", err)
 	}

internal/page/home.go

@@ -13,7 +13,7 @@ import (
 	"rhemawavetech.com/rhemawave/internal/shaderManager"
 )
 
-var GitVersion = "07292026_1445"
+var GitVersion = "07292026_1618"
 
 type Home struct {
 	Base

internal/page/scrollerPage.go

@@ -38,6 +38,7 @@ type ScrollerPage struct {
 
 	audioRetryTimer float32
 	audioStarted    bool
+	originalAudioStarted bool
 	dynamicAudio    bool
 
 	lines         *LineDeque
@@ -284,34 +285,32 @@ func (p *ScrollerPage) Init(ctx *PageCtx) error {
 	logger.Info("DynamicAudio mode: %v", p.dynamicAudio)
 
 	// Start audio for the first proclamation in the stream.
-	started := false
-	if len(p.streams) > 0 {
-		if p.dynamicAudio {
-			started = p.switchAudioForFrequency(p.streams[0].frequencyValue)
-		}
+	if len(p.streams) > 0 && p.dynamicAudio {
+		p.switchAudioForFrequency(p.streams[0].frequencyValue)
+		p.audioStarted = true
 	}
 
-	if !started {
-		// Non-dynamic mode or frequency-specific file not yet available.
-		// Play whatever track is marked Selected in the audio_files table.
-		var selectedAudio db.AudioFile
-		if err := p.Context.DbPtr.Where("Selected = ?", true).First(&selectedAudio).Error; err != nil {
-			selectedAudio = db.AudioFile{
-				Name:     "OriginalAudio",
-				Path:     filepath.Join(audioDir(), "OriginalAudio.wav"),
-				Selected: true,
-				Order:    0,
+	if !p.audioStarted && !p.dynamicAudio {
+		// Static track selected in Audio Options.  Play whatever track is
+		// marked Selected in the audio_tracks table.
+		var selectedTrack db.AudioTrack
+		if err := p.Context.DbPtr.Where("selected = ?", true).First(&selectedTrack).Error; err != nil {
+			logger.Warning("No selected audio track found, audio will start when a track is chosen")
+		} else {
+			path := filepath.Join(audioDir(), selectedTrack.Filename)
+			if _, err := os.Stat(path); err == nil {
+				logger.Info("Playing %s", path)
+				if err := mixer.Play(path, true, config); err != nil {
+					logger.Error("Mixer returned an error: %v", err)
+				} else {
+					p.audioStarted = true
+				}
+			} else {
+				logger.Warning("Selected audio file %s not found yet (download may still be in progress)", path)
 			}
 		}
-
-		logger.Info("Playing %s", selectedAudio.Path)
-		if err := mixer.Play(selectedAudio.Path, true, config); err != nil {
-			logger.Error("Mixer returned an error: %v", err)
-		}
 	}
 
-	p.audioStarted = started
-
 	currentDevice := mixer.CurrentDevice()
 	if currentDevice == "" {
 		currentDevice = "default"
@@ -438,36 +437,55 @@ func audioDir() string {
 	return filepath.Join(home, ".radiantwave", "audio")
 }
 
-// audioPathForFrequency builds the on-disk path for a solfeggio frequency's
-// audio file, e.g. 396 -> "~/.radiantwave/audio/396Hz.wav".
-func (p *ScrollerPage) audioPathForFrequency(freq int) string {
-	return filepath.Join(audioDir(), fmt.Sprintf("%dHz.wav", freq))
-}
-
 // switchAudioForFrequency swaps the currently playing track to match freq.
+// If freq is 0 or no audio track exists for it, falls back to the original
+// / selected audio track (so audio never goes silent in Ready state).
 //
-//   - freq == 0 ("no specific frequency", i.e. the default proclamation) is
-//     always a no-op — whatever is playing keeps playing.
-//   - If freq already matches what's playing, nothing happens.
-//   - If the matching file doesn't exist on disk yet, the current track
-//     keeps playing untouched (so missing solfeggio audio never causes
-//     silence — and starts working automatically once the file is added).
-//   - Otherwise the current track is stopped immediately and freq's track
-//     starts right away (hard cut, no fade).
-//
-// Returns true if freq's track is now playing (either just switched, or
-// already was).
+// Returns true if audio is now playing (either frequency-specific or fallback).
 func (p *ScrollerPage) switchAudioForFrequency(freq int) bool {
-	if freq == 0 {
-		return false
-	}
-	if freq == p.currentAudioFreq {
+	if freq != 0 && freq == p.currentAudioFreq {
 		return true
 	}
 
-	path := p.audioPathForFrequency(freq)
+	if freq != 0 {
+		if track, err := p.audioTrackForFrequency(freq); err == nil {
+			path := filepath.Join(audioDir(), track.Filename)
+			if _, err := os.Stat(path); err == nil {
+				config, err := db.GetConfig(p.Context.DbPtr)
+				if err != nil {
+					panic(err)
+				}
+				mixer.Stop(3000, config)
+				if err := mixer.Play(path, true, config); err != nil {
+					logger.Error("Mixer returned an error: %v", err)
+					return false
+				}
+				p.currentAudioFreq = freq
+				return true
+			}
+		}
+	}
+
+	return p.playOriginalAudio()
+}
+
+// playOriginalAudio plays the selected AudioTrack, or the OriginalAudio track
+// if nothing is selected. Returns true if audio started successfully.
+func (p *ScrollerPage) playOriginalAudio() bool {
+	if p.originalAudioStarted {
+		return true
+	}
+
+	var track db.AudioTrack
+	if err := p.Context.DbPtr.Where("selected = ?", true).First(&track).Error; err != nil {
+		if err := p.Context.DbPtr.Where("assigned_frequency = ?", 0).First(&track).Error; err != nil {
+			logger.Warning("No audio tracks available")
+			return false
+		}
+	}
+	path := filepath.Join(audioDir(), track.Filename)
 	if _, err := os.Stat(path); err != nil {
-		logger.Warning("No audio file for %dHz (%s), keeping current track", freq, path)
+		logger.Warning("Original audio file not found: %s", path)
 		return false
 	}
 	config, err := db.GetConfig(p.Context.DbPtr)
@@ -479,10 +497,17 @@ func (p *ScrollerPage) switchAudioForFrequency(freq int) bool {
 		logger.Error("Mixer returned an error: %v", err)
 		return false
 	}
-	p.currentAudioFreq = freq
+	p.originalAudioStarted = true
+	p.currentAudioFreq = 0
 	return true
 }
 
+func (p *ScrollerPage) audioTrackForFrequency(freq int) (db.AudioTrack, error) {
+	var track db.AudioTrack
+	err := p.Context.DbPtr.Where("assigned_frequency = ?", freq).First(&track).Error
+	return track, err
+}
+
 // nextLineWords gets words for the current line and advances proclamation stream when needed.
 func (p *ScrollerPage) nextLineWords() []string {
 	if len(p.streams) == 0 {
@@ -645,20 +670,29 @@ func (p *ScrollerPage) HandleEvent(event *sdl.Event) error {
 func (p *ScrollerPage) Update(dt float32) error {
 	p.updateAutoVelocity(dt)
 
-	// In dynamic mode, retry audio switch every 5 seconds until the
-	// frequency-specific file is found. In non-dynamic mode the selected
-	// file plays continuously — nothing to retry.
-	if p.dynamicAudio && !p.audioStarted {
+	// Periodically try to switch to the frequency-specific file in case
+	// it was just downloaded (only when the stream's frequency differs from
+	// whatever is currently playing).
+	if p.dynamicAudio && len(p.streams) > 0 {
 		p.audioRetryTimer += dt
 		if p.audioRetryTimer >= 5.0 {
 			p.audioRetryTimer = 0
-			if len(p.streams) > 0 {
-				freq := p.streams[p.streamIndex].frequencyValue
-				p.audioStarted = p.switchAudioForFrequency(freq) || freq == 0
+			freq := p.streams[p.streamIndex].frequencyValue
+			if freq != 0 && freq != p.currentAudioFreq {
+				p.switchAudioForFrequency(freq)
 			}
 		}
 	}
 
+	// Non-dynamic mode: retry selected track in case download just finished.
+	if !p.dynamicAudio && !p.audioStarted {
+		p.audioRetryTimer += dt
+		if p.audioRetryTimer >= 5.0 {
+			p.audioRetryTimer = 0
+			p.audioStarted = p.playOriginalAudio()
+		}
+	}
+
 	p.scrollOffset += dt * p.velocity
 	move := int32(p.scrollOffset)
 	if move == 0 {