Migrate audio transcoding from DASH to a single AAC (.m4a) file

Application/Configuration/StreamGatewayConfiguration.cs

@@ -11,6 +11,6 @@ namespace Musify.Application.Configuration
         public required string PublicBaseUrl { get; set; }
 
         [Required]
-        public string ManifestFileName { get; set; } = "manifest.mpd";
+        public string AudioFileName { get; set; } = "audio.m4a";
     }
 }

Application/Contracts/IAudioTranscoderService.cs

@@ -2,7 +2,7 @@ namespace Musify.Application.Contracts
 {
     public interface IAudioTranscoderService
     {
-        Task<int> TranscodeToDashAsync(Stream audioStream, string destinationPath, CancellationToken cancellationToken);
+        Task<int> TranscodeToAudioFileAsync(Stream audioStream, string destinationPath, CancellationToken cancellationToken);
 
         Task<bool> IsValidAudioFileAsync(string filePath, CancellationToken cancellationToken);
     }

Application/Tracks/Handlers/GetTrackStreamQueryHandler.cs

@@ -44,7 +44,7 @@ namespace Musify.Application.Tracks.Handlers
                 streamGatewayConfiguration.PublicBaseUrl.TrimEnd('/'),
                 "media",
                 folderPath,
-                streamGatewayConfiguration.ManifestFileName);
+                streamGatewayConfiguration.AudioFileName);
 
             logger.LogInformation("Issued stream ticket for track {TrackId} to user {UserId}", request.TrackId, request.UserId);