How it worked before the firmware update:

Pair BT3030 with N900 then plug in headphones into N900.
The headphones override the BT3030 so audio comes out of them.
You can still use the BT3030 as a remote control and sound continues to come out of headphones.
Unfortunately it did also redirect the mic to the built-in one instead of using the BT3030, even though it still shows the "headset" icon in the tray. This was annoying but still better than the current situation.

How it works now:

Every time the track changes it goes "oh, a BT headset, lets direct audio to it".
It is no longer possible to keep the BT3030 turned on as a remote AND use the headphones plugged directly into the N900, at the same time .

How I think it should work:

• Headphones should always take priority if plugged directly into N900! Perhaps output audio to internal headphone port AND BT headset simultaneously. Either solution should still allow the use of the BT headsets mic and buttons while headphones are plugged into the N900.
• Wired headset should always takes priority over BT headset but again continue to allow the BT headset buttons to work as a remote.

Now I am not sure if I should report this is a bug report or not, as its more a user preference. However I would like to ask everyone in general, is there a way to tell the N900 to NEVER use my BT3030 for audio? Its not perfect but I could live with having to use the N900 microphone to make calls, although how the N900 would react to a BT remote with mic but no speakers is anyones guess. It might actually work as desired, its just getting it to ignore is for sound output that is tricky.

Surely there are profiles somewhere that determines what to do when certain combinations of hardware are detected?