I'm betting this has been covered before, but since I haven't been here in a while, here goes nothing. I play bass and sing in a three-piece rock band. I currently use a set of Roland PK-5 pedals and a very old Yamaha tone generator to fill in the sound a bit during solos. I would like to take a step up to triggering samples and more complex midi-goodies, but I have no idea where to start. Do I need to buy a sampler, tone generator and sequencer, or could it all be done through my laptop? I've tried the local music store, but I'm tired of having to wait over a half-hour to talk to the one keyboard tech that they have on staff.