"Hmmmm... I want to watch this video clip. Oh wait, I'm playing music so I can't. I know, I'll pause the music. Oh, still no luck. Stop the music? Oh, freakin' great. I'll just completely close the music player shall I?"
"I can't play music, what's going on there? Oh, I know, I had a flash animation open in my browser several hours ago and it hasn't released the sound device yet..."
Anyway, there's a new blog here which has all the answers you need (the only answer you need to be precise).
Enjoy your new freedom :-)