I missed this the first time around. See my response below.
2. The MBP transmits though a Sennheiser BTD500 USB Bluetooth transmitter/adapter
3. The bluetooth receiver is an Arcam MiniBlink that is linked to the amplifier.
The problem is that as soon as I set the Sennheiser bluetooth transmitter as "Audio device" in "Tools - Options" and then try playing anything, I get the error message in the title, which is something like:
"Something went wrong with the playback.
Details:
Playback could not be started on the output Core Audio using the format 44.1 kHz 2channel.
This format may not be supported by your hardware. You can use DSP Studio to change the output to a compatible format.
This normally means that MC can't send audio at the sample rate listed. In this case 44kHz. Because this is bluetooth, maybe it's limited to one specific sample rate. I would guess it's 48kHz. If I'm right, you'd need to force MC to use 48kHz for all audio. Here's how:
Player > DSP Studio > Output Format > (checked)
Player > DSP Studio > Output Format > Sample rate table (in the center):
Set all outputs to 48,000 Hz. Start with 44,100 input to 48,000 output, then test. If that works, change all of the outputs to 48,000.
That will probably fix the issue. Good luck.
Brian.