You can find all of the music on the site from this page. The music is organized by meter, BPM (tempo) and by style. "What do the numbers mean?" Most of the music that is named with two numbers are labeled with both the Meter and the BPM. For example, "3 132" means that this track is in 3/4 and the tempo is 132 BPM. There is also a "Free Library" of 35 tracks to download for free to get you started.