If any reader is an expert with Alsa, I could use a hand. I'm having a nightmare of a time getting Alsa to work with multiple input/output options. The current set up involves a built-in sound card, a Logitech USB headset, and IDJC (which requires jackd). That means at least three outputs and three inputs (not counting any other software-based sources/loads). I can get IDJC to work with either the sound card or the headset, but not both.
Any help (or pointers to documents other than the ALSA wiki) would be greatly appreciated.