It’s a MIDI sequencer–really, it seems more of an interactive instrument to me–that “uses six hamsters to control three channels of pitch and rhythm”:http://instruct1.cit.cornell.edu/courses/eceprojectsland/STUDENTPROJ/2002to2003/lil2/.
There are wav and mp3s of the output. I wonder if you could get the base MIDI files for use as a ringtone?