@MarkG_108 I did see that, but it doesn't show much detail as to what's working and what's not (or which channel the features are working on). It also doesn't reflect all of the currently ported devices...
I regularly send out to a Blue tooth receiver hooked up to external DAC / amp / speakers - it works with no problems with my OnePlus One. Bluetooth transmission tends to degrade the audio a little bit though - but being able to send to better speakers makes a dramatic improvement over phone speakers.
@Lakotaubp Switched to Stable last night from System Settings>Updates>Update Settings>Chanels and this morning it is switched back to RC again (haven't gone to System>About This Device>Check For Updates since last night). Think I'm just going to have to re-flash it. It's odd, I remember being able to switch back and forth before (think it was when a bug with the Notes app was fixed).