so i'm working with a MacBook Pro (OS X 10.6.6), a Yamaha DTXplorer electronic drumset, and a Midisport Uno cable to connect the two. Yesterday i had this all worked out and was able to record via midi from my drums using the sounds provided in garageband and MidiPipe to remap the signals. Today, however, garageband won't give me any options for audio input other than "built-in input" or "system setting," neither of which are what i need. Any ideas on how to get this working?