Technically it should be possible with the help of RN52. By default it is in SPP (Serial Peripheral Profile) mode and only when we send a steering wheel or IHU button event, it goes into CMD mode to handle the command and send out an action over AVRCP to the audio source.
The possibilities are there, we just need to find time to work on them amongst all the bugs that need to be fixed first. :)
2001 9-5 SE V6; 2006 9-5 Wagon; iOS; BlueSaab version = "latest and greatest" :)