Thunderbolt Display + iMac -- use both speakers?

[aforty]

Is it possible for me to output sound to both the Thunderbolt Display as well as my iMac speakers? Would just make the whole thing louder which would work for me as I'm not crazy about getting standalone desktop speakers.

Anything that will do this? Some kind of hack or perhaps something I overlooked in the Preferences?

 

[lucianot]

I have the same issue. Anyone?

 

[jdemar]

I haven't tried it but you can probably create a Multi-output device in Applications/Utilities/AudioMIDI

http://support.apple.com/kb/HT3956