I have not tried some of the suggestions here but I am using Windows 7 64 and my media player of choice is JRiver Media Center 18. IMHO, the boss of media players! I have it set as default and all the icons on my music files have the MC18 logo. If I click directly on the music file outside of OrangeCD it will open using MC18, but if I click on play/queue inside of OrangeCD it opens WMP. Anyone have a solution to this or have a different media player running through OrangeCD? Perhaps I am missing something.