HT3956: How to combine multiple audio interfaces by creating an aggregate deviceLearn about How to combine multiple audio interfaces by creating an aggregate device
Currently Being ModeratedMar 16, 2013 11:07 AM (in response to Chucky91)
As far as I know you can only select one output at a time - either through the dock or through the Mac's speakers.
Currently Being ModeratedMar 17, 2013 6:36 AM (in response to Kappy)
I've researched and it seems to be possible by selecting a multi-room option rather than aggregate. Unfortunately this is only available on Mountain Lion - I still use Snow Leopard.
Currently Being ModeratedMar 17, 2013 11:29 AM (in response to Chucky91)
Then consider upgrading:
Upgrading to Mountain Lion
To upgrade to Mountain Lion you must have Snow Leopard 10.6.8 or Lion installed. Purchase and download Mountain Lion from the App Store. Sign in using your Apple ID. Mountain Lion is $19.99 plus tax. The file is quite large, over 4 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
Macs that can be upgraded to OS X Mountain Lion
1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later
2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later
3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later
4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later
5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later
6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later
7. Xserve (Early 2009) - Model Identifier 3,1 or later
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
Are my applications compatible?
For a complete How-To introduction from Apple see Upgrade to OS X Mountain Lion.