Yes you can. I had my A300-Pro programmed up to do just that. Check out page 90 of the manual. There are PC numbers (Program Change) for everything you need there. I'm a bit annoyed with myself fo rbuying the A300_pro now. I wish I had got the A800-Pro. I just purchased it at Christmas, but I didn't know then about the BK-7m. If I ha, I would definately have got the A800-Pro.
I may try to make up a map for A-Pro series keyboards though. If I get anywhere with it, I'll let you know. I really wanted it to do more than just control the fills etc.
Oh by the way... look out for FC7 pedals going cheap on ebay. I already have one, but I picked up another for £17 plus postage on ebay yesterday. that gives me one for the BK-7m and one for the G70 too!
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Roland G-70, FP-4, BK-7m, SonicCell, KC-350 x 2, DS-5 x 2, A300-Pro, Sonar X1 PE, BR1600CD Yamaha HX-1 System 1, KA-20x2