I suppose you run the Playmaker with the BL's direct connected!
Don't know if it is different then - I have mine connected to my BeoMaster/A-Aux (it is set to 'Fixed Line-out and is in Option 0).
I have no problem (not at all) with the autoswitching.
Activating AirPlay on the iPad makes it switch to the AirPlay 'port' (DLNA as well). If AirPlay (or DLNA) is deactivated and the source on the Line-in is activated, it just playes on without further controlling. My Line-in source has a 'fixed line output as well. All volumen is controlled via Beo4/ through the AudioMaster.
If the source at the Line-in is still active, and AirPlay is activated, it (of cource) switches to AirPlay with the same sound level. If the Lie-in source is still active after the AirPlay is deactivated, it/the Line-in source immidiatedly comes on again.
Be sure that the output level of the Line-in source is high enough - must be at the same level approx as the AirPlay - and that you only will have to control the volumen through the Playmaker (direct or via Beo4).
Thinking back - I remember that you want to control the sound through iDevice/tv and that you wanted the Playmaker 'untouched'.
Your line-in source is the tv's headphone connection, right? Are you sure you have the volumen high enough to let the Playmaker 'sense' the connection?
N.B. My Playmaker is a MK1 - I don't know if anything was changed in the MK2.
MM
Location: Flensborg————Danmark