BlackBerry Pearl 8130

i got the phone a few days ago but i cant figure a couple things out so hopefully someone can help me out. first of all i know this is going to sound dumb but i cant get the video recorder to work. i click the scroll ball to start and then to stop it but it doesnt save the video. what should i do? second, what format does music have to be in to play? when i tried playing mine it said "the devise media processor is busy" what does that mean?

any help is much appreciated! thank you.