Comment 10 for bug 568241

Was having this same problem for a while on my 64 bit system. It worked fine on my netbook and on someone else's 32 bit ubuntu setup.

It seems to have started working after reinstalling "gvfs-backends"

I'm not sure if that is what fixed it as I was trying many things, including trying other programs to attempt to connect to it. However, It did start working right after reinstalling that package.

Before reinstalling, the touch would not appear under ~/.gvfs/
Right after reinstalling, it showed up in that folder after re-plugging the ipod. After restarting rhythmbox, it worked.

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Again, my problem was the same as the OP. I was able to browse it in Nautilus, however it wouldn't show up in Rythmbox.