I am using iTunes 3 on 10.1.5 on a DP 533 and I have been noticing that after a while of playing music the sound quality degrades. I have also noticed that upon restart of the comp (not just iTunes) that sound quality is restored. I am using a Yamaha TSS-1 speaker system, buy I don't think that is the problem because that works fine all the time in os9. I saw some schematics the other day that put the sound codec right before the audio out port. Is there a way to replace or reinstall the codec that iTunes uses for playback? Thanks so much.