I suggest using dpad middle for pause / play toggle. It is the intended use, I put the play/pause image there more for reference use.

I will make uktube to allow viewing of private videos as well.

Rtalian:
I read your post, just forgot to answer. OGG support is crippled in the way that it does not load ogg tags yet. You will need to put your ogg files in folders with the album name as the folder name. That way, ukmp will try to get the cover based on the album name. I will look into getting ogg/wma/aac tag support as well as wma tag support in the future. I am just focusing on mp3 support as most of the music these days is in mp3 format.