HTC Mogul / XV6800 / PPC6800 / P4000

I am trying to get my 6800 to play music without the screen draining battery, so far bluetooth works with TCPMP while screen is off but then BT drains a bit of battery, and it doesn't work with Media player. This is something I have gotten used to while I had the i760, which allows you to turn off the screen while music is running and control play/pause next/back with the headphones (only with media player). Either I want to find a plugin for TCPMP to control it with bluetooth headphones or find a way to allow media player to work with headphones while screen is off. Please help.