Does anyone know of a CD emulator (like Alcohol or Daemon tools for windows) but made for Linux?

"CD emulator"..umm that's a weird term. Do you mean you would like to be able to use a CD image file instead of a real in-drive CD? It depends on what you need, but you can mount a CD image file to a directory like this:
which mounts the image to be a part of the filesystem (change path and filename accordingly!) in /media/cdrom. That's how you would mount a regular cdrom too, except that with images you need the loop option (and cdrom device file would be something like /dev/cdrom and not some .iso file).

If it's about games that do cd checks and so on, then I'm not sure if that's enough.

Well you can easily create images of CDs or DVDs with 'dd'. For example, if the CD/DVD drive is /dev/hdc:

dd if=/dev/hdc of=myimage.iso

The file then has the image of the CD/DVD. You can use the image of a CD/DVD as it it were a disk in a drive, by "loopback" mounting it. For example:

mkdir somedir
mount -t iso9660 myimage.iso somedir -o loop,ro

The above will create a directory (mountpoint) called somedir, and loopback mount the CD/DVD image. You can then use the files in "somedir/" as if the physical CD/DVD were mounted there.

Thanks for the help . . . yeah I want to mount a bin/cue in order watch movies.

I will try that option. I didnt think about Linux already haveing it programed into it.

Thanks again

Fofire

There's no reason in Linux to mount a bin/cue or iso to play a movie. You can play the bin file directly:

mplayer some.bin

If it's an iso image of a DVD, you can play it with (for example):

mplayer dvd://1 -dvd-device /home/myuser/some.iso

I feel so stupid for not trying that . . . you're right it works like that
Thanks

fofire