Maybe check this out John. Copied from the media player help files
To change the file types the Player plays automatically
On the Tools menu, click Options.
Click the File Types tab.
Do the following:
Select the check box for each file type that you want the Player to play automatically when you double-click a file on your computer or in a shared folder on a network (or in the case of CDs or DVDs, when you insert them into your computer).
Clear the check box for each file type that you do not want the Player to play automatically.
Notes
You must be logged on as an administrator or a member of the Administrators group to complete this procedure.
If your version of the Windows operating system supports AutoPlay, your AutoPlay settings may affect your Player file types settings. For more information about AutoPlay, see Windows Help.
If you install other multimedia playback programs on your computer, they may interfere with your Player file types settings. For more information about setting file type ownership in other multimedia playback programs, see the documentation that came with those programs.
Most of the listed file types are selected by default.
Related topics
Playing files
Setting file type options
Just make sure that when the other players are installed/selected, you do not make it? the default, that plays everything....... know what I mean? You stipulate what type of filed to play. L.
Just make sure that when the other players are installed/selected, you do not make it? the default, that plays everything....... know what I mean? You stipulate what type of files to play. L.