That said, I'm using Win-XP but after downloading Safari for XP, my digital downloads sound noticeably better than IE8 - more clear & detailed.
I have no idea what Apple does on the audio side but my experience has been very good but still not in same ballpark as a good CD player or analog turntable/arm/cartridge combination.
Please explain to me how a browser makes a difference in how a song sounds after downloading? There are no sound codecs independent of either.