Drum Machine is a Windows app that allows you to play your Rock Band drums (once "hacked" for Windows) as if it were a real electronic drumset. Drum Machine uses input from the drumset to play "samples" that you assign to each pad. It comes with a few drum samples already, but you can add as many as you want (up to 1024), since they are simply WAV files. Drum Machine also allows you to record yourself, save it to file, and play it back or send it to a friend.