go to this site…
http://www.soundclick.com/bands/2/h1phopmusic.htm
there are some AMAZING streaming audio tracks there, espcially the eminem ones at the top of the page… you HAVE to hear them if you even somewhat like Em - they are amazing!
Also, scroll down and listen to Em doing impersonations of other rappers… it’s SOOOOOOOOOO funny guys - for real! 
Enjoy!