i do alphabetically by artist, then albumize (is that a word?) chronologically within the artist.
in my CDs, i have two piles. mixed cds and one-artist cds. the t ypical cds are sorted by what i listen to most frequently, piled on top of everything else which is in no particular order. my burned cds are roughly chronological..based on when i made them.
my burned cds are also labelled with emotions that give me a clue as to whats on the cd, so i keep them loosely together