Just wanted to say what's up and that I really enjoy the site, I just got a BB pearl 8100. And after finding this site I can't wait to do things with my phone!
i use the roxio media manager software that comes w/ the phone to move music to my berry. it's pretty easy to do. make sure you have a microsd card to store the songs on - i have a 2gb card and it has plenty of room so far. it's also where i store my pics, ringtones, wallpaper, etc. welcome to the forums and enjoy your pearl!
For simple media copy to/fro, I often don't have patience to launch DM and then good ol slow Roxio. I much prefer copy/paste via windows explorer when in mass storage mode.