Version: 2.1.1 (using KDE 4.3.0) OS: Linux Installed from: Fedora RPMs qtscrob (http://qtscrob.sourceforge.net/) can submit tracks that have been played on your iPod, MTP, or rockbox device to last.fm. Since the Amarok 2 series is focusing on internet service and last.fm integration I think this would be a great feature to implement. As you can see from the link, qtscrob is GPL so it may even be possible to re-use the code. A simple right click --> sync with last.fm option on the player's library would probably be a good way to do it. An option to sync automatically might be appropriate as well.
*** This bug has been marked as a duplicate of bug 183145 ***