Media Player 10 Problem With IE7 Beta2

I'm using XP Media Center OS. With IE6 I had no problem using Media Player 10 to download music from MSN or Walmart (or other services). Twice I have tried upgrading to IE7 Beta2; but if I try to access the download sites through Media Player 10, I'm told to use "Premium Services ". I'm offered a connection link, but when I click it nothing happens. There is also no information I can find that tells me what the Premium Services are, how to get them, and why I need them. So I keep restoring my system back to before the IE7 upgrade. I could use a little help/explanation/sympathy from one of you knowledgeable operators. Thanks.

 

Thanks PeteC. I'll check into those.