\> thing is I can't shutdown my iPod. A long press on the Play button
> brings up the 'Shutting Down' message, the Apple logo appears and then
> Rockbox starts up again.

That happens to me if it's plugged in when you turn it off. Is it?

> BTW what do most people use to transfer playlists to the Rockbox iPod
> from Linux?

Depends:

(1) If you're talking about copying the playlist (like the actual .m3u
file) I use cp.

(2) If you're talking about copying all the files to which the playlist
refers, I currently use cp, but plan on writing a script for that.

(3) If you're asking "how do I sync my podcasts to my ipod and only put
the new ones there", I wrote a script for that:
http://www.mattcaron.net/linux/scripts/sync_podcasts

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 ~~ Matt Caron ~~