First of all the reason it keeps opening certain files is because Quicktime has a Codec's that plays certain file types and it has a very annoying image viewer.
A simple way to remove the image issue is right click on a image file pref the file type you having issues with and then;
Right Click on File > Go down to Properties > Under General tab (it says Open With.....) click change
then a new dialog opens and u change it to what u want that type of images to open with E.g. Paint , Windows Image Viewer once you have choose press Apply or Ok and then Apple shouldnt try and open it again!!
With the media player issue
do the same thing but just with an Audio file and then say Open With Windows Media Player
And Apple hopefully bother you again.
Registry!
remove registrys values to remove the applefiles total
go to Start > Run and type "regedit" and then press Ctrl + F that opens the find dialog and type!
"Quicktime"
And delete any values it come up with then dont mess with anythink else
Hope this helps
