Sound in System Preferences keeps changing outputs
I have a PCIe card (424 from MOTU) that I use as sound output. It keeps getting reset to INTERNAL SPEAKERS. I'm wondering if there's a pref file or something that needs to be changed trashed to keep this from changing.
This is a used computer that I just bought and wiped the drive and setup and installed all my programs. I didn't have this problem on my old computer.
Anyone know what's going on? It's VERY annoying having to reset the output every time I want to hear playback.
thanks!
Mac Pro, OS X Mountain Lion (10.8.5), 24 Gigs RAM. PCIe 424 sound card