Custom install QuickTime, baby! Works EveryTime,
... or you can do this in QuickTime
[*](drop down list
) choose File Type Associations
[*]uncheck those 3 checkboxes.
Alternatively, you can go to your MusicMatch
's General settings and put a check on the Windows Media Files checkbox... or you can re-associate media file types with Windows Media Player
[*]and check the ones you want.
Then, there file type association with Winamp
references... (or Ctrl+P for short
[*]select the file types to override QuickTime's evil
Finally, there is editing your registries under Folder Options or with a registry editor itself (e.g., Windows' very own Registry Editor