How to sort play order on each Clip subdirectory?

Help.

While I enjoy the excellent sound quality of the Clip (I just got a 2 GB model), how about telling me how to sort the play order of each directory so multiple songs in the same directory play the songs in the order I want them to do it? (This was a great thing about the Creative ZEN Nano Plus–they provided a program to specifically sort the play order of each song in every subdirectory.)

It all has to be done through the songs’ ID3 tags, which the Clip uses to organize and play back (and not folder structure).