When I first played my music in amarok t was slow, but ok. But after a while(adding more music) it was so sluggish. I looked on the Internet and everyone there used mysql or Postgresql or their music database. So I ound a "how to" and failed miserably trying to get it to work. A week later I tried again with another "how to" and this time it worked and now my I can smoothly scroll true my music. So I'm happy that it works great, but I'm sad that a user has to go true so much trouble(I've spent hours behind my pc, working in the terminal).