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

[GermanFlag]

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