Yes there is two ways to do it first open real player and find settings or options then find the file association menu it will say something like realplayer is the default player for these files ect ect. Uncheck all the boxes if you don't want it to play auto you will see files like ra, raw, mpu, mp3 so on. If you like musicmatch better then open it and go to settings and it has a box that says something of the same and check the boxes that will make mmJ the one that opens when you play a music file Window's media player has it to. Also there is a box in realplayer that says get file info or something to that extent and also in mmj if you don't want it to try to get the artist name or album title you will also find that where the file types are uncheck that box and it won't try to find that info when you put a new file on your computer. The other way is to go to microsoft and check out there search for file association there is another way to do it manually but it is a little harder to do
