[ogg-dev] Illiminable oggdsf WMP entries

[Nicholas Schell]

Slight problem with the NSIS installer writing the entries for WMP.
Found this out myself trying to do the same.

The installer needs to write a "MediaType.Icon" entry for each
exension in "HKLM\SOFTWARE\Microsoft\MediaPlayer\Player\Extensions".
Even if the entry is blank that's fine, it just needs to exist.

The problem occurs when you open WMP and goto the File Types
association menu, you will not be able to turn on/off the extensions
added by the installer. Once they are turned off they will permanently
stay off. The "MediaType.Icon" entry is somehow required in order to
set the associations from within WMP's menu.