I just found a Presonus Fire Box at a pawn shop for $100, but it's missing 1 of the cd's, the firewire cable and the spdif/midi cable. I would of bought it but the spdif/midi cable seems like it would be hard to find any suggestions? also wonder if any one has had any issues with the midi on this box. I have a Akai mpk49 midi controller?????? Sonar 8.5 running on a laptop w/ i7 processor 2.8ghz w/4 gb ram