I like to listen to podcasts with the Blackberry in a pocket, controlling play/pause and volume without needing to bring the Blackberry out of the pocket.
I don't know if this is technically possible, but can you allow the option/choice/ability to remap play/pause to the left or right convenience button? I find the mute button difficult to press blindly. Plus I've found that the mute button interferes with the Media Player. At some point today, I believe pressing mute started both Media Player *and* Podtrapper.