How to make Amarok see changes in tags?

I installed easytag to edit somewhat the tags of my songs, since Amarok has some problem going from cp1251 to unicode . So I edited my tags, but Amarok didn't update them. I searched a little and found this extremely useful command:

find /media/music -exec touch {} \; 

What it does is to change the date to all files in the directory and thus when Amarok rescan the collection (I forced it with update collection), it sees the new tags and everything is nice again. Source