CD/lossless sounds very good. MP3 downloads from I tunes and other sources are compressed and don't sound nearly as good. Although, like cds, the sound quality varies. With a better system, I've tended to avoid downloading, unless you find something you like on HD Tracks. I just buy the CD and burn it to my iMac. To me, itunes is for picking up a song or two here and there when the quality doesn't matter so much.
However, I regularly listen to internet radio on i-tunes, and depending on the station it can sound from pretty bad to quite impressive.
However, I regularly listen to internet radio on i-tunes, and depending on the station it can sound from pretty bad to quite impressive.