many posts say "you need Windows Media Player" or "you need RealPlayer", but that usually isn't the case. I am listening to WUMB right now using Media Player Classic, a free, open source, NON-Microsoft player.

You can play most Real Media with it also (take a look here

in some other place, WYSIWYG posted a link to a great country blues and gospel station , and it plays fine with Media Player Classic. There other ways to avoid the hassles of Real Player and M$, but MPC is probably the easiest.