Help please Audio playback is fuzzy and not sharp and clear after tracks has been playing for a minute or so. Something not right? My system is: Pure Music 3 used as downloaded plus PM streamthrough as downloaded Mac Mini 2011, i7, El Cap AMD RadeonHD 6630M, HRT Microstreamer, Paradigm Millenia One CT. iTunes on external La Cie HD Firewire 800 All audio cables by Audioquest Tracks mix of 256 and Apple lossless from CDs Route is from La Cie to Mac Mini to HRT to Paradigm. Any suggestions gratefully received.