I am using BELA as a signal processing unit on an ordinary analogue headphone, to add effects to the audio being played in the headphone. Right now I input a stereo signal to the BELA audio input through a minijack, and control settings through the USB interface to the BELA. Ideally I would like to get rid of the cables and send both the audio and the control parameters wirelessly from a smartphone. If I can only solve one of these challenges, that would also be progress. :-)
I understand your solution (with the Nordic USB BLE dongle) to be a candidate for sending settings (parameters) through BLE. If I can do that, at least it wouldn't be necessary to be attached to a computer for changing parameters. I have quite a lot of parameters, which is why I would like to use an app, instead of a few buttons, for example.
I realise that your solution would not support audio streaming, but I just thought that it would be nice if it was possible to send stereo audio through an "ordinary" A2DP Bluetooth dongle on the BBB/Pocket Beagle.
Thanks again for your help, Andy.