I just bought a Soundblaster Audigy Platinum so that should do the trick...But do I necessarily NEED to use my computer to link em all up? Holla please!
You don't have to use the computer to lace them all up, oyu own the ASR-10 and considering you've probably been sequencing on it since you've been producing, you can use that if you'd like. You just have to MIDI all the equipment up
use the asr as the master since your familiar with it. go midi out to midi in to the next instrument them midi out to midi in to the next instrument then take the midi out from the last instrument and return it to the midi in of the asr. then go into the two slave instruments and set them to receive the midi information from the asr. make sure the midi channels are the same on the instruments when you wanna access a instrument besides the asr but your hands will control everything thru the asr. i hope that helps.