D2 lord of destruction not working
 

I got the 1.08 patch from battle.net and installed the game and i replaced the downloaded file with the new one but when i play the game it keeps on asking for the play cd then the expansion cd every time i click on something can someone tell me whats wrong and how to fix it

Copy d2music.mpq from the play disc and d2xvideo.mpq from the expansion disc into your Diablo install directory.