smf fixed an issue with SPU DMAs for Primal Rage 2, which also ended up fixing the buzzing sound in the Dance Maniax games in MAME. So the Dance Maniax games will be playable with working audio in the upcoming MAME 0.275 release at the end of February!
https://github.com/mamedev/mame/commit/f197c5c3215820bdd1394153be567377d4f51b83