Hi there! I'm César from Argentina and it's my first post. Excuse me, my english is very bad.
I was using the player and gone to "Inteligent playlists" looking for a playlist with all the songs (of my collection)  with the same tag, but I haven't found it. So, I propose to you, boys, to do it, like a new feature. It doesn't seems to be more complicated to make.
I thought that I could find this functionality in some amarok plugin, but was not well. However, I have not searched so much in the web.
Thank you boys, you're doing a fantastic job every day with amarok.