Saving Playlist error

I'm currently playing music from my external drive using mocp
this is the folder's location: /run/media/user/FreeAgent Drive/Music/Zune

Everything works fine until I try to save a playlist.
After pressing 'V' to save the current playlist I get this error:

"Can't save playlist : Permission Denied"

Will entering an abs-path to a diff location let me save it?

You apparantly don't have permission to write to that particular directory on your external drive. Giving another directory to which you do have such permission will work. (I'd suggest ~/.moc/ .)