You did not say what type of files you want to move, or copy. CDRom's are a little different than other devices. They can contain data files, and these are copied using the 'cp' ( copy copmmand ).
Copy will make a new file and leave the old file in its original location. Here is an example on how to use copy as a regular user.
cp /path/to/the/file/file1 /target/path/file1
You do not need to be in the directory if you supply the path information to the file. The target path is a path to where you have write permission.
Since this is a CDRom, you need to know where the cdrom is mounted. This is determined when the 'mount' command is run. You can run it manually, or it can be run by the system based on what is in the file /etc/fstab. Here is the entry for my CDRom in my fstab.
/dev/cdrom /mnt/cdrom auto umask=0,users,iocharset=iso8859-15,sync,codepage=850,noauto,ro,exec 0 0
The mount point in the file system is the second field, /mnt/cdrom. So in the cp command above I would really use cp /mnt/cdrom/path/on/cdrom/file1 /target/path/file1 to copy the file.
I could also navigate to the directory where the file is I want to copy using the 'cd' command. CD is the change directory command. So, id I did a cd /mnt/cdrom/path/on/ and pressed enter, I would be in that directory. Then I could do the copy with 'cp file1 /target/path/file1' ( all commands without the quotes. I use the quotes to clarify what I type .
So, what if it is a music file. Copy doesn't work because you can not mount a music CD. You can still get a copy of the file on your hard drive. I would then use a program like Grip. Grip can rip music files, and you can compress them directly to your favorite file format. mp3, ogg etc...
The only other thing you need to do is oprn a BASH shell. You didn't say what desktop you are running. Look through your menu system, there will be an icon to launch a shell.
There is also a move command. It is used in a similar way to cp, the difference is the file is moved to the target location, and removed from the source location. Unless your CDRom media is erasable, some are, you will not need this command on the CDRom.
You can get help with these commands by typing 'man command' on the command prompt. A real example would be 'man cp' for help with the copy command. The 'Q' key quits the man page help.
Hope this helps.