meloDL

meloDL is a native macOS app focused on downloading and converting audio with a clean workflow and practical defaults.

Features

• URL-to-audio flow - accepts media URLs and downloads audio tracks
• Broad site support via yt-dlp - works with many platforms (YouTube/YouTube Music, SoundCloud, TikTok, Instagram, X, and more)
• Format and quality controls - configurable output settings for conversion
• Playlist support - handles playlist downloads with queue and status UI
• Duplicate-aware downloads - checks an indexed local library to prevent obvious re-downloads
• Advanced duplicate cleanup - byte-level audio hashing for higher-confidence duplicate matching
• Rekordbox XML import - improves duplicate matching for DJ-oriented libraries
• Staged cleanup sessions - review and confirm duplicate actions before they are finalized
• Undo grace window - short post-action undo period for smart cleanup operations
• Metadata and thumbnail embedding - can enrich downloaded files depending on output format
• Automatic binary update checks - tracks updates for bundled yt-dlp, ffmpeg, and ffprobe

Technical Details

• the app orchestrates bundled CLI tools (yt-dlp, ffmpeg, ffprobe) through Swift Process execution.
• playlist URLs can be prefetched so multiple entries are processed as a managed queue.
• users can define library paths that are indexed for duplicate-aware download decisions.
• duplicate resolution can use byte-level raw audio hashing for high-confidence matching.
• rekordbox XML exports can be imported to assist duplicate matching in existing DJ libraries.
• duplicate actions are staged for manual review before confirmation, with a short undo grace period after smart cleanup.
• tool updates are handled by a GitHubUpdateService that downloads and replaces binaries in Application Support, with versions tracked in Application Support/meloDL/versions.json.
• app updates are managed with Sparkle via an appcast.xml feed configured by SUFeedURL in Info.plist.