Lord of the Rings

Hello, i am having issues installing a game.
it gets to a certian point and then an error message pops up. here's what it says:
error from reading file C:programfiles(x86)\surreal\fellowship\music\music.sdu verify that the file exists and that you can access it.
I can access it, and i can even hear music whilst it attempts to install the game.. can some one tell me why it's doing this??