Richard.
Seriously, I have NO Security tab in options...
Player, Copy Music, Devices, Performance, and on the next row, Media Library, Visulizations, File Type, DVD, Network.
None of these give the ability to do as suggested.
The 'About' in help tells me Windows Media Player for Windows XP, The copyright blurb, then 8.00.00. 4487, then Product ID 55274-644-7886616-23498
Does this help?
TJ