My workaround:
1. Go to Control Panel: Speakers and set any other speakers as Default Device
2. Open PowerDVD and get a DVD playing (no sound at this point)
3. Go to Control Panel: Speakers and set Bose USB Audio as Default Device (still no sound at this point, though the DVD is playing)
4. Go to Configuration on the PowerDVD, Audio, and then change the Speaker Environment to any other environment (# of speakers). Now audio plays on PowerDVD.
If I close PowerDVD and re-open it, I need to start with the same workaround as noted above to get things going.
Now, I have a workaround that isn't the end of the world, but isn't there a way for PowerDVD to just recognize and play with the Bose Companion speakers as the Default Device from the beginning, without this workaround?
Any help appreciated.