Santa brought me bluetooth headphones. I had to buy a USB bluetooth dongle thing to make my PC transmit bluetooth, which works good for iTunes and Abode Audition. However, I can't seem to get Sonar to playback through this output. I'd love to be able to listen to my works in progress while doing the dishes. Admittedly, audio ins and outs are not something I know much about. The only outputs I see anywhere in Sonar are my M-Audio sound card. But in Control Panel I see more outs including the bluetooth. Is there any way to send Sonar output to the bluetooth thing on demand?

I think you'll find that that device will work for anything but Sonar for playback. You'll have to go into Sonars audio preferences every time and even change from ASIO to MME drivers and you will have a mess on your hands. I wouldn't risk it myself. Bluetooth might also cause DPCLAT spikes like most wireless networks and should be turned off while using a DAW.