If you want to develop an program to load ringtones onto the BB without useing the simulator, you could always directly modify the IPD file backup of the Content Space. The IPD format is simply a database format to hold all the backup information and RIM kindly shared the format in early 2006. They even provided code to disassemble the file and reconstruct a new one. I think the only problem that you may have is if the Content Space itself is some sort of database format. The lucky draw would be if the individual files in the Content Space are seperate database entries.
http://www.blackberry.com/developers...e_format.shtml
toddz