1) cd = change directory, cp = copy
2) go to /dev/mmcblk1p1/ and type ls to see if it is the good folder. I would think it would be meego root, and you better use /dev/mmcblk1p1/home/something/music (I don't know what something is, and you may have to create the music folder)
3) folders are case sensitive mydocs != MyDocs
4) you can autocomplete folders name by hitting "tab". If you type "cp -R /h" and then tab, it will finish the folder (you will have "cp -R /home")