Apparently even if the Windows Media Player (WiMP) GUID reporting is disabled in it's settings (Options - Player - Allow internet sites to uniquely identify your Player), WiMP decides to ignore this...

Fortunately, you can use Proxomitron to counter this in a few simple steps:
1) In the WiMP options, under Network, set both the HTTP and MMS protocol to use 127.0.0.1:8080 as a proxy (edit for your Prox port).
2) Use the filter below:
[HTTP headers]
In = FALSE
Out = TRUE
Key = "Pragma: Block WiMp GUID Reporting (Out)"
Match = "xClientGUID=* $ALERT(WiMP GUID being sent to u !)"
3) Enjoy

I have not seen this criminal behaviour with WiMP 7 on other Windows OSs, or with the ripped WiMP 8 on 2k, so this really is a WinXP-only filter.
[Edit: added an alert box to this filter, for use with Prox 4.3]
Edited by - Jor on 18 Jun 2002 15:41:50