This page is for one thing: adding a 3D effect to a track so the sound moves around your head and sits in a wider space instead of flat in the center. Audjust does this in the browser by panning the audio side to side and layering in reverb for depth, so a normal stereo song feels open on headphones. It's free, with no install and no account.
Upload an MP3 or WAV, then open the studio. Turn on the spatial effect to start the sound swinging between your ears, and set how fast and how wide it moves. Add reverb on top for the sense of room, preview while you tweak, then export the finished file.
A common use is turning a favorite song into a 3D headphone version to post or share. Another is making a roomier, more ambient edit of a vocal or instrumental for studying or background listening.
One thing to know: the 3D effect lives in the stereo field, so it really only lands on headphones or earbuds. On a single mono speaker the movement mostly collapses, so test on the device people will actually use.
People often ask whether they need special software or surround-sound files. You don't. A regular stereo MP3 is enough; the panning plus reverb create the 3D impression right in your browser.
Keep the movement gentle if you want it listenable for a whole song. Heavy, fast swings sound striking for a few seconds but get tiring, so a slower sweep usually wears better.