For Vista you should download/install the Windows Mobile Device Manager, which provides everything you need to directly access and synchronize your PDA with your computer. Once running you should have no problems synchronizing your music directly from within WMP.
Hope this helps,
I just got a ipaq rz1715 and I am running Vista and media player 11 on my desk top and the ipaq came with windows media player 9 series. When I try to send music to the ipaq from my desk top it tells me that the driver needs to be updated but I cannot find anywhere to get this driver HP was no help (as usual)THe ipaq is running windows pocket pc 2003 Help