Bop It Download (found Windows program; 2006)
From The Lost Media Wiki
Bopit Download was a Windows-exclusive program that could be launched after plugging a Bop It Download into the computer via USB. The program could be used to record your own voice and download beats and sounds on the game itself.
Playbopit.com
www.playbopit.com was where the program could be downloaded back then. In mid-2012, the website shut down and the program became lost. The only remaining downloads on the internet give viruses.