You can connect your BB to your computer via USB and drag the mp3 files to your memory card. It should be mounted like any removable hard drive or flash drive.

You can pair your BB with your computer via Bluetooth and send files that way. At least on my Mac it's drop-dead simple. For larger transfers a USB connection is faster, but for a 120Kb picture or a short ring tone, Bluetooth is fast and easy.

For really big jobs you can use a card reader and remove the storage from your BB, put it in the reader (that's attached to your computer via USB) and treat it like any external drive. Drag and drop. I'm told it's a little faster than connecting the Blackberry to the computer via USB for transferring data, but I don't know how much faster. Plus this method is a pain in the butt, swapping the memory card in and out of the BB.


Just remember: any copy protected files won't play on your Blackberry. If you bought songs in the iTunes store they have embedded DRM that won't let them play anywhere but your computer or iPod. Of course the DRM is fairly easy to break, but it's a time-consuming process.