Missed that, ok then so as I say it's an association problem ok heres the solution,

In my computer across the menu bar and the top you will see "Tools" from here you will get a sub menu you then need to select "Folder Options" this then will launch a window with tabs across the top you one you want to select is "File Types" this can take a while and you will see a yellow torch this is perfectly normal, mostly will depend on how much software you have installed on your PC.

You will then see all the file assosiation for your PC (WORD OF WARNING BE CAREFUL IN HERE) it is in alphabetical order. You need to go down until you find CDA if you just type CDA this will take you to it(Assuming this is a proper Audio CD that you would buy from HMV etc. Then click change at the bottom again this launches another window and hopefully to make it easier for you it should be in the list of application that appear. Select Windows Media Player and check Always use the selected program to open this type of file click ok, then close.

You may need to change other associations but we will start with this first.

Kind regards,

Martin.