RetroWave Audio Player
A zero-telemetry offline audio player built with the Web Audio API and HTML5 Canvas. Drag and drop your local audio files, enjoy vibrant synthwave real-time visualization, or synthesize an offline demo loop instantly.
Real-Time Visualizer
No Track Loaded
Drop audio files or click Demo Loop
0:00
0:00
Playlist Queue
0 tracks
Drag & Drop Audio Files Here
Supports .mp3, .wav, .ogg, .m4a (100% Client-side)
Queue is empty. Drag MP3 files or click "Synthesize Demo Synth Loop" to start listening!
How to Use Offline with Spotify Playlists
1
Batch Download Songs
Use the included automated browser script spotify_download_script.txt to safely download your playlist MP3s from spotifymp3.com into your Downloads folder.
2
Drag & Drop into Player
Select the downloaded audio files from your computer and drop them into the glowing dropzone above. All files stay strictly on your device.
3
Full Visualizer Experience
Toggle between Neon Bars, Oscilloscope, and Radial Sun visualizers. Enjoy zero telemetry, zero buffering, and 100% offline audio playback.