Quote:
The MP3s I have tried and liked are not vinyl rips but downloaded from legit music sites but don't exhibit the zingy quality I am trying to avoid, so my problem is not with digital audio per se but some commercial CDs.

I seriously doubt those MP3s were made from anything other than the original CDs.

I'm going to go out on a limb and bet that if you heard those original CDs, you'd hear the same "zingy" quality. I imagine that you're hearing the aliasing at high frequencies and the encoded MP3s have had a highpass filter applied that completely obliterates those frequencies.
_________________________
Bitt Faulk