Accepted formats
AetherWave accepts: MP3, WAV, M4A, FLAC, OGG.
- Max file size: 50 MB
- Max duration: 10 minutes
- Sample rate: any (we resample as needed)
- Mono or stereo: both fine
Why your upload is failing
"File too large"
Compress to MP3 at 192 kbps. A 4-minute song at that bitrate is roughly 6 MB - well under the limit. Use a free tool like Audacity or an online converter.
"Unsupported format"
The file extension does not match the actual file contents. This happens when someone renames a .webm to .mp3 or exports from a DAW with a weird container. Re-export as a real MP3 or WAV from your source tool.
"Audio file is corrupt"
The file header is damaged or the file was truncated during transfer. Re-download the original or re-export from your DAW.
Upload stalls at 99%
Your browser uploaded the file but our backend has not confirmed yet. Wait 30 seconds - large files can take a moment to hit R2 storage. If it still sits there, refresh the page and retry.
Soul Forge: why the analysis looks wrong
Soul Forge uses librosa (Python audio analysis) to extract tempo, key, genre hints, and energy profile from your upload. If the analysis is nonsense:
- Very short clips (under 30 seconds) produce unreliable genre detection. Upload the full track.
- Spoken word / podcast audio confuses the genre classifier. Soul Forge is tuned for music.
- Heavy distortion or lo-fi production can fool the key detector. Try adjusting the detected key manually.
- Live recordings with lots of crowd noise lower the confidence on every field.
If the analysis is clearly off but the audio is a normal music track, report it - we tune the analysis constantly.
Music Studio cover-from-upload
When you upload a track for Suno cover generation:
- The first 30 seconds get sent as the reference. Pick a file where the first 30s represents the song.
- Very complex arrangements (orchestra, dense hip-hop, black metal) cover less cleanly than pop, rock, folk, electronic.
- The cover inherits tempo, key, and feel - but Suno adds its own interpretation of the lyrics you provide.
When to reach support
If you have tried all of the above and a clean MP3 is still rejected, include:
- File size and duration
- What tool you exported it from (Ableton, Logic, GarageBand, online converter, etc.)
- The exact error message shown on the upload page