# Audio to MP3 — yeezhan.com
> One-time pay-per-task emergency tool to make your file ready for submission.
> No credits, no balance. One payment unlocks one task result, valid for 24 hours.

Tool domain: https://audio-to-mp3.yeezhan.com
Skill definition: https://audio-to-mp3.yeezhan.com/skill/SKILL.md
API documentation: https://audio-to-mp3.yeezhan.com/api/docs

## What this tool does
Convert WAV / M4A / OGG / FLAC / AAC recordings into MP3 at the bitrate the platform asks for.

## Typical user problems
- The form accepts "MP3 only". Your recording is M4A, your export is FLAC, your dictaphone makes WAV. You need one standard MP3 at the right bitrate — now, not after installing software.
- Homework portals and HR systems accept MP3 only, and your voice memo is an .m4a. You need speech-grade MP3 at a small size, minutes before the deadline.
- Music platforms and mastering engineers ask for the highest common bitrate. Lossless FLAC is not accepted — 320 kbps MP3 is the ceiling you must hit without re-compressing twice.

## Parameters
- bitrate: enum, optional. MP3 码率

## Pricing
- Watermarked preview: free, no login required
- Final clean output: $0.99 one-time per task
- Require login (email/phone OTP) to complete payment
- Result available for download 24 hours after payment

## Limitations
- Max input 200 MB
- Output MP3 (libmp3lame) at 128/192/320 kbps
- Cover art not carried over in v1; speech/music content fully preserved