emusonacid! legacy

Hi. Not sure if this is the right place to post this, but:

I can't get my master controller keyboard to switch presets on my Orbit Dance Planet. I know it used to, because I've used the feature in sequences previously, though it's been a while. . . I want to make sure I'm doing everything right, so:

I have the Orbit set to accept program changes
I turn Orbit's midi on to the corresponding channel (track 1 is midi channel 1 on keyboard, and midi channel 1 is active on Orbit).

Am I doing anything wrong? My ESI-32 changes sample presets just fine, so I can't imagine the problem stems from my master keyboard.

BTW, anyone know where I might find a CD-ROM for my ESI-32, so I can finally hear all the sounds I got with the '32 on those groovy free CD-ROMs?

Thanks a bunch.