I don't know too much about OSX, because I have Windows. But I know how to transfer music via Bluetooth. Here's how.
1. Pair the phone with the computer. I don't know how to do this on Mac, but it's probably pretty simple. I hear that's what Macs are know for...

2. Put the music files in the Mac's Bluetooth Exchange Folder, whatever that may be.
3. On the phone, open up the Bluetooth menu and tap on the computer's name.
4. Go down to Browse/Get Files
5. Tap the music file and it should begin to download. It will take awhile, Bluetooth is pretty slow.
That's it. It should now be in My Music on the phone. Repeat these steps for all your music files.
If you have alot of music files, and this would take too long, send me a personal message or reply to this and I can tell you how to add them with Bitpim. I just don't feel like typing it all right now.

Warning: If you get a text message or phone call during the Bluetooth transfer, it will cancel it. I'd recommend transferring the music while in Music Only mode. It will turn off network access but allow Bluetooth while it's on. Go to My Music>Music Settings>Music Only to turn on and off.
This worked PERFECT! Thanks!
As an OS X user myself, the following directions are for other Mac users wanting to sync music to their phone.
1.) Turn on Bluetooth from the computer's System Preferences window, turn on "Discoverable" as well.
2.) In that same window, click on File Sharing Setup.
3.) In the window that opens turn on Bluetooth Sharing. When you do that, you will be prompted to select folders to share and to use as a Bluetooth drop for files you send from your phone to your computer. The folder you care about here is the one "Folder Others Can Browse" Select the folder you have your music stored in that you want to move to your phone.
Once this is complete, then follow the rest of the directions codymws posted above.
