Combine lineout audio + usb speakers
Mac Mini Pre-2009, Mac OS X (10.6.6)
Mac Mini Pre-2009, Mac OS X (10.6.6)
Gregory, I'm doing the same thing. I have the B&W MM-1's and I have an Altec subwoofer set up on line-out. In OS 10.7 Lion, you need to follow TeenTitan's advice on how to open Audio MIDI Setup, then set up a "Multi-Output Device". You won't be able to control volume on this source from the keyboard anymore, so I usually use Rogue Amoeba's SoundSource to switch between the sources once I have the volume right.
Combine lineout audio + usb speakers