If you don’t purchase the new Dave Matthews Band CD through iTunes then the official DMB site has these instructions on how to defeat the DRM:
If you have a Mac computer you can copy the songs using your iTunes Player as you would normally do.
If you have a PC place the CD into your computer and allow the CD to automatically start. If the CD does not automatically start, open your Windows Explorer, locate the drive letter for your CD drive and double-click on the LaunchCD.exe file located on your CD.
Once the application has been launched and the End User License Agreement has been accepted, you can click the Copy Songs button on the top menu.
Follow the instructions to copy the secure Windows Media Files (WMA) to your PC. Make a note of where you are copying the songs to, you will need to get to these secure Windows Media Files in the next steps.
Once the WMA files are on your PC you can open and listen to the songs with Windows Media Player 9.0 or higher. You may also play them in any compatible player that can play secure Windows Media files, such as MusicMatch, RealPlayer, and Winamp, but it will require that you obtain a license to do so. To obtain this license, from the Welcome Screen of the user interface, click on the link below the album art that says If your music does not play in your preferred player, click here. Follow the instructions to download the alternate license.
Using Windows Media Player only, you can then burn the songs to a CD. Please note that in order to burn the files, you need to upgrade to or already have Windows Media Player 9 or greater.
Once the CD has been burned, place the copied CD back into your computer and open iTunes. iTunes can now rip the songs as you would a normal CD.
One final note that the DMB site makes:
Please note an easier and more acceptable solution requires cooperation from Apple, who we have already reached out to in hopes of addressing this issue. To help speed this effort, we ask that you use the following link to contact Apple and ask them to provide a solution that would easily allow you to move content from protected CDs into iTunes or onto your iPod rather than having to go through the additional steps above. http://www.apple.com/feedback/ipod.html
Seems to me that the easiest way to get the CD into iTunes on a Windows machine is to just buy the CD from the iTunes Music Store and save yourself all of the steps above.