Give Bitpim a shot (free download, runs on Mac, use google to find/download it.) I got it to work with my LG VX8300 to send music over bluetooth from my Mac to the phone. It's a Verizon phone as well, and Verizon is notorious for locking their phones down so if I got music on it using bitpim, you have a good shot at doing so assuming your phone runs the same software and similar file system. Hunt around the documentation, in my case you put music in an mp3 folder on the phone, and bitpim translates your mp3 into something phone friendly. They become available for ringtones that way, or at least I've been able to transfer music to be used for ringtones.
Keep in mind bluetooth is a tad slow, but it works and eliminated the need for me to buy another cable.