Comment 0 for bug 1505213

When connecting multiple bluetooth audio devices the audio routing doesn't behave as it should.

When multiple devices are connected which support A2DP for example we have to

* Pick one which becomes the active one
* When the active one disappears (disconnected, out-of-range) we need to pick the next one and set it as the active

Right now the result is not constant when connecting multiple devices:

* bluez and PA (mainly PA) try to setup all devices not respecting if one is already active
* when disconnecting the active one the previously not-active one doesn't become active and stays unused