Windows Media Player Sends Cookies for Audio CDs?

CleverNickName asks: "I have adsubtract installed, on my Windows 2000 system, and filter out all cookies and advertisements, except for sites like Slashdot. When my Windows Media Player starts up a CD, it tries to set a cookie, and I hear adsubtract 'gulp' it. So why does WMP need to set a cookie about my CDs? Does it send this information to the Borg? I've read the included documentation, and searched on Microsoft's website, without finding an acceptable answer. Maybe a fellow reader can help unravel the mystery?" I could not get my Windows 98 box to reproduce this behavior. I didn't see anything in the C:\Windows\Cookies that would indicate that WMP was sending anything, nor did I see the machine emitting any unusual network traffic. If anyone else has noticed this behavior, please let us know.