The problem I'm having seems to be a common one. I have my XP-30 synth hooked up to an MPC2000 for my sequencer. Whenever I try to change to a different sound after recording a previous track with another sound, the sound on that previous track changes to the newly selected sound. I know that the XP-30 has to be in performance mode but Iv'e been fiddling w/ it for 3 weeks now and still can't figure out what's going on. Can someone give me some help please???