Here is some info:
*"The Samsung Trance is a V CAST Music phone in the sense that it can play V CAST music tracks, but you can’t download the music over the air directly to the phone since it lacks EVDO. You’ll need to subscribe to V CAST Music with Rhapsody on a Windows PC (sorry, no Mac version is available) and download your tunes to the PC, then put them on a microSD card or use the included USB cable to sync music to the phone. What if you want to listen to non-V Cast music? No problem, the Samsung Trance can work with many popular music formats including .mp3, .wma, unprotected .aac and .aac+ files."*
Source:
http://www.mobiletechreview.com/phones/Samsung-Trance.htm
Needless to say, if your library contains any DRM-protected tracks from the iTunes Store, they will not work in any non-Apple device.