This tool takes a song you already have and makes it play on endless repeat. It scans the track for the two points that match up best, then joins the end back to the start, so the song restarts without the jump or gap you usually hear when a track loops.
Open the page and upload your file. Audjust analyzes the audio and suggests the cleanest loop points. Play the looped version to check the joint, nudge the start or end if you want a tighter match, then download the result. It runs in the browser, it's free, and there's no signup or install. MP3 and WAV both work.
This is for when you want one song to keep playing in the background: a single track on repeat for a focus or study session, steady music behind a stream, a shop, a waiting room, or a long video where you don't want listeners noticing the song reset every few minutes. You can also pull a shorter loop or sample out of a track if you produce music.
Whether the loop sounds smooth comes down to the song. Audjust looks for spots where the waveform and the beat line up, so let it pick the points instead of forcing an exact second. Tracks with a section that repeats musically loop cleanly; a song with a hard, one-off ending is tougher, so choose a part that flows back into itself and the seam disappears.