AI Music Extender MP3

This page does one thing: you have an MP3 and you need it to run longer. Drop the file in and Audjust analyzes its beats and section boundaries, then makes a longer version by repeating choruses and instrumental sections at natural points, so the result still flows like the original. It runs in your browser, it's free, and there's no signup or install.

Here's how it goes. Load your MP3, wait for the analysis, and type the duration you want. The editor shows on the timeline where the song is being extended. Play it back, drag a join point if a transition sounds off, then export. You get an audio file back, ready to use.

A common case: a video or reel runs longer than your music, so the track ends before the visuals do. Extend the MP3 to match the runtime instead of restarting it on repeat. Another: a walk-on, dance routine, or slideshow that needs an extra thirty or sixty seconds without an obvious seam.

One practical tip: pick a target close to a whole number of sections. Audjust extends by reusing the song's own sections, not by slowing playback, so the pitch and tempo stay the same and joins land cleaner when the target lines up with a natural section length.

The question most people ask: does it generate new notes with AI? No. It analyzes the file to find and reuse the song's existing beats and sections, so what you hear is the real recording rearranged to a new length, not invented audio.