Motorola

Could someone tell me if I am able to save mp3s to my Trans Flash and play on this phone. I tried it a couple days ago. I saved an audio file from my laptop to the Trans Flash. Then I placed it in the slot and I couldn't play the song. I knew I saved it correctly because I placed the memory card on the my Nextel i870 and it worked perfectly. Maybe I'm doing something wrong please HELP...or maybe Verizon Wireless disabled this feature from the phone so I could buy that crap "GET IT NOW".