So I can't figure out how to get the media player to play through my bluetooth headset, when I go to play a song it'll go through the pearl's speaker, unless I plug in wired headset.

Also, how do you activate voice dailing without using the bluetooth headset?

To use a BT headset you have to pair the BB with the headset via the instructions that came with it. Then you turn BT on in the phone and play. It won't play stereo though.
The left convenience key is default to voice dialing, there's also an icon in the menu for voice dialing.

Didn't work. There is no option to listen to music through the BT headset.

Also, there is no option in the menu for voice dialing.