I’ve received a bunch of questions about IE8 Beta 2, so I put together a FAQ page over at ZDNet. It includes answers to a bunch of questions, plus links to installation instructions and downloads for all supported 32- and 64-bit Windows versions. It’s here:
An IE8 Beta 2 Q&A
Also, you might want to check in on my first look at the features in this release:
Internet Explorer 8 gets a massive makeover
and the accompanying screenshot gallery has some good stuff with 14 fully captioned images, each illustrating a key feature or capability:
Internet Explorer 8 Beta 2
Ed Bott (@ wordpress.com) 
Is it possible for you to test and see if IE8 causes mp3’s with embedded album art to show up “black” in media center like IE7 does? Here’s a link that goes into further detail, http://msmvps.com/blogs/chrisl/archive/2006/11/01/237537.aspx