ogg files added to Other Media in WMP12 in the Windows 7 beta
I tried testing the ogg dshow filters on Win7 beta. It works but the files are indexed under Other Media, not music so it is impossible to include them in the main library features, like playlists etc. Note that I selected an option in the installer to have them categorised under Music.
Other than that, the file plays nicely and seek, pause and resume all work properly. There is, of course, no tag support and with the tag support tool from http://www.softpointer.com/WMPTagSupport.htm, the installer just hangs at 100% of the progress bar, the window non-responsive.