I found a way to do this using garage band. I copied it to my desktop, changed the ext to m4a(not sure if necessary), opened garage band and created a new project, dragged the ringtone from my desktop into garage band, made sure that Itunes was set to import as mp3, then back in garage band I chose to export to itunes and there it was in my itunes music library as an mp3! Emailed it to my friend and now I wait to find out if her BB will recognize it!
