Best way to keep files from being copyable/alterable

Hello everyone. I have a user who wants to rip a CD onto a PC that is used by a number of people. He wants them to be able to listen to the music on that PC only. He doesn't want them to be able to copy the music files to a flash drive, a CD drive, to be able to e-mail the files to themselves or anything like that. My thought was some kind of DRM software or something. Another thought is to use some software to lock down the PC by disabling the USB ports, CD writing capability of the optical drive, etc. Any other ideas? If you think the DRM idea is a good one where can I go for software that does that?

Does he own the pc?
If not forget the whole idea.

If music is on the computer and someone wants it, you can not lock it down enough if they can access it.

Are they all having different users and rights to that PC?

I agree with Train, there are too many ways to circumvent any kind of lock where people have physical access to the PC. However you could digitally watermark the files, which would at least show that the files have been copied.