Be sure to read the release notes to learn about known issues with the current beta release. In particular, be sure that you read about the issue that impacts MP3 files that are be accessed by the Windows 7 installation, either on the local computer or on your network. View the MP3 knowledge base article to download the fix to correct that issue. It’s strongly recommended that you install the fix, or perform one of the workarounds specified in the release notes, before you allow Windows 7 to access MP3s or corruption of the MP3 files could occur.
You can visit the Microsoft TechNet Windows 7 forums to talk to others about Windows 7 and receive support offered by Microsoft MVPs and subject matter experts. Visit the Windows 7 tab on the Springboard Series website for lots of information on how Windows 7 can help you in your organization.