I want to go out and play live with bass and keys on backing but Im not sure what the best device to do this with will be? Obviously I need to send a click track to the drummer out say the left side of a stereo out, and then I imagine bass and keys out the right side. I would love to be able to send bass and keys individually out but that would be three outs? Anyone have any ideas on what hardware/software to use? Budget is an issue to some degree, and I have a laptop available. Also, something easy to use on stage would be desirable, as in a footswitch to start each song or the likes... I would appreciate any thoughts? Thanks guys!