[HowTo] Creative BT-W2 USB-Bluetooth Audio adapter

[TheOldPresbyope]

I just purchased a Creative BT-W2 USB-Bluetooth audio adapter because:

• it supports the proprietary aptX audio codec as do my Sennheiser HD 4.50BTNC headphones
  
• it is (relatively) inexpensive, at least compared to the few other aptX-capable USB adapters I could find
  

It turned out to be pretty trivial to use this adapter with moOde once I stopped thinking of it as a Bluetooth device. You won't find the usual BT controller functions so you can't discover, pair, and connect in the usual way.

On my RPi3B+ with moOde r4.2 installed-

• turn off the integrated BT controller in System configuration. (I'm sure BT control of other devices is still usable; I just didn't want to confuse myself while configuring for the BT-W2.)
  
• plug in the BT-W2 adapter
  
• Set the headphones into pairing mode following Sennheiser's instructions. This involves turning them off and then pressing and holding the power button until the headphones have powered up and the LED begins flashing blue/red. 
  
• Pair and connect the BT-W2 to the headphones following Creative's instructions. This involves pressing and holding the unlabeled button on the end of the adapter until the flashing blue LED turns solid. The headphone "voice" announces the connection is established.
  
• On the moOde Audio Config/MPD page, select USB audio device and apply.
  

Et Voila!

I'm now listening to my Sennheiser headphones. The combination sounds sweet, especially with a little crossfeed dialed in, but I haven't figured out yet how to prove the aptX codec is in use.

Regards,
Kents