Ubuntu Multimedia :: Can't Transfer Songs To IPod - "read Only" File Error?

I use Rhythmbox to transfer songs to my iPod (nano 1st gen). I installed Mediatomb the other day so I could stream music and video on my PS3 (which is awesome btw). Unfortunately, using Mediatomb my PS3 would only find a small portion of my music collection.So I ran Code:sudo nautilus then right clicked on my music folder, and changed the Group category to "Create and delete files" under the Permissions tab. After, my PS3 found my entire music collection. Great. But now in Rhythmbox I get an error about the mp3 files being read-only and can't transfer them to my iPod I've tried reversing the steps (with and without 'sudo'), but no luck. Under the File Access section of Permissions, I can never change anything (like to "read only" or "read and write"). No matter what I choose it always stays at "---"