I personally *hate* the ringtones that came with the 8703e, and went on a quest to find my beloved Ring 6. I tried having a friend record it in an editing booth, which worked, but not as well as I'd have liked.
Then I remembered the Blackberry Simulator. I grabbed newest copy that supported the 7250, installed Audacity, simulated an incoming phone call, and recorded straight from the sound card.
Only Ring 6 is here, but PM me if you want others and I'll record them. It does sound a bit different on the 8703 than it does on the 7250, I'm assuming it has something to do with the speaker.