Got the new eq working using the DCOP call I added today. For a while I was really stumped with some things, but they turned out to not be so bad. There's still some issues I need to figure out, need to put the equalizer in a proper dialog etc. Right now my plan is to make it an amaroK "script" and then putting it into amaroK itself at a later date (not in 1.2.x).
Looking forward to the LiveCD.