Hi All, Is there really no way in Mac OS to play iTunes or Spotify music tracks using all speakers and the sub-woofer that are connected to my 7.1 channel external usb audio card? At the moment the system only plays music to the front two speakers from stereo sources like Spotify etc. All speakers are only used if playing music from players and audio formats that support multiple channels. Any ideas how to fake multiple audio channels, the way Windows does it? I have a Diamond 7.1 Channel USB external sound card and Mac OS Lion.