I have a lot of ogg files encoded from my own CDs.
When I load them with WMP extend, the only fields that are read are "TITLE" and "GENRE". In wmp file property dialog boxes, onnly these fields are filled.
My ogg were encoded with the "oggenc" command line under linux (ubuntu 6.10)
Tags of these files are correctly read in Rythmbox music player, and "easytag" application.
My versions :
WMP extender : v1.4
Win Media Player : v 10.0.0.4036
Win XP SP2.