It says:

"Plug in your PSP, iPod, MP3 player and use Rhythmbox to download, store, buy and play music.

Share playlists with your friends.

Access Last.fm directly through Rhythmbox to stream your favourite music.

Stream and play video from YouTube, BBC and others."

Actually Ubuntu 9.10 - Rhythmbox does not recognizes my iPod touch 2G.I cannot upload/download my music.