Audio Extender AI

Use this when a track is too short and you need it to run longer. The tool reads the song's beats and section boundaries, then repeats and rejoins parts on those natural seams, so the longer version hits your exact target length without an obvious loop or a hard splice.

Upload an MP3 or WAV, type the length you want, and let it find the spots where a section can repeat cleanly. Preview the result, nudge the join point if you want, and download. Everything runs in the browser, so nothing uploads to an account.

A common case: a 90-second song that has to cover a three-minute slideshow or a longer reel. Instead of fading and restarting the file, it stretches the track to 3:00 by repeating a chorus or bridge where the beat already lines up. It also works for stretching a short backing loop to fill a full performance or presentation.

One thing to know: extending works best when the song has a clear repeating section to draw from. A track that constantly changes with no repeats gives the tool less to work with, so the cleanest joins come from songs with steady verses or choruses.

The question most people ask: does it add new music that wasn't there? No. It doesn't generate fresh notes or instruments. It rearranges and repeats the audio you already have, placing the cuts on beats so the longer version still sounds like one continuous track.