Xine Can't Find Dvd's, Path Is Wrong

I've been trying to remember the command I used last time which worked. It was like a path command so xine would look on sr0 instead of the default dvd that it installs with it but i cant remember it. I seem to have to enter it after rebooting the linux box so it finds the dvd but I haven't used this machine in awhile and I didn't write it down. Does anyone on here have any ideas? Maybe a way to set the path when the machine boots?

`tjcrusher`