I can only speak about my installations, but I uninstalled everything I could that had to do with pulse audio, and gstreamer. Xine has always had the much better engine, so is what I use with Amarok. My Amarok plays any amount of tunes I put on the play list, and never has any choppy playback. This is on a 2002 Compaq with an AMD 2100* CPU and on board nforce2 sound chip. Pretty low spec machine from what I'm used to.