Disable Wired Headset when using Bluetooth for MEDIA (now: only available for phone)

I'm trying to use SoundAbout to outsmart an app that requires a plugged-in headset, and then insists on using the wired headset for audio in/out.  I want to use Bluetooth for that app!

I see that there's a feature to "Disable Wired Headset when using Bluetooth for phone."  And I'm hoping that the same feature, made available for media, would solve the problem.

PS: Thanks MUCH for this nifty app. It's almost perfect for my peculiar (research) project.