Originally Posted by BillsonChang007
So sample rate as well?
What I mean to say, is that bit rate is just one among a number of variables that affect the sound quality of a file, and one that, unless you know exactly how the file was made, should be disregarded completely.
It is trivial to take a 128kbps file and pad it out to say 4600kbps by expanding it to 24/96 raw PCM, and you can easily make a terrible sounding 320kbps file by either using an old encoder, or ancient codec. And then there's a number of ways in in which the data can get corrupted.
All in all it's better take a (blind) listen for yourself, rather than just blindly trusting the numbers. Or buy FLAC/ALAC from a reputable seller and forget about the rest.