I know you probably don't want to hear this, but there are a few sites, telling you that you shouldn't plug in a cowon s9 into a linux box, because it can brick it - unfortunately.
here a Link to a thread, discussing this problem cowon brick
It's the reason I haven't bought an S9, although I really wanted to. For your tags problem, I can't help you. I can only wish you luck that Fedora doesn't brick your S9. Instead, can you answer me some questions?
1) How long do you use the S9 with Fedora/Linux in geneal?
3) Has Cowon responded to the claimed problems recently?