In ubuntu, the CD or DVD automatically appears on your desktop when
inserted. There is no need for command line manipulations, but if you
prefer to do it that way, of course linux lets you do it.

In unix, there is no concept of "mounting" music or movies. You simply
play them. Removable media etc are mounted automatically by the volume
manager. The old school mount approach is for disks which you intend to
make part of the filesystem.

OTOH music and movies are streamed directly from the CD or DVD and there
is no way that you could, or should mount them.