help with getting own music onto razor V3m

I bought a razor on saturday with the high expectations of getting my own music collection on it. First I bought the memory card(SD) and the card reader (per advice of verizons sales clerk) and found out that even if you put your music on the card its still in mp3 format and wont work on the phone.

I then returned the card reader and bought the music essential kit, so that it will format the music and put it on my phone. One problem, even after installing the motorola usb drivers and getting the message that my hardware has been intsalled succesfully, windows media player does not pick up the phone as an external dvice!!It says"no external devise is found" and even when I try and "sync" from my phone my phone says "connect failure".WHY???Please let me know why WMP10 does not read the phone after it was installed step by step and what can i do to get my music on the phone.?