Aggregate Device won't play: "device has no output controls"
I used the Audio MIDI Setup utility.
I created the Aggregate Device but the Prefs/Sound /Output tells me that the device "has no output controls" so it won't use it.
The two devices are a bluetooth headset and the built-in output jack (with a plain earbud connected -- no controls on the wires).
Both work individually.
Safari-OTHER, Mac OS X (10.6.8)