So, is a good way to fix this error to add a Track # to the Id3 tags instead of relying on the title to order the lists?

BTW, To add Track# fields to Id3 tags use Mp3- Tag Studio 3 by Magnus Brading:

Create a TXT file with the numbers you want up to 99 like this:
01
02
03
04
...
99

Name file anything you want.TXT

Open Mp3 - Tag Studio 3 and select the "Use Explorer Browser tree" checkbox and select the "Tag/Rename from List" tab. Under "Tag/Rename from List" tab locate the TXT file you creared in the "Input list " box then under Options section select the "Tag" radiobutton and then in the File Row Format section select the "TrackNr" checkbox. Select an album from the Explorer Browser tree and press the EXECUTE! button for each album you want to tag the Track field for...

Takes a while but it took me 1 hour to do 13,000 songs. I still have not determined if this fixes the playlist ordering bug yet however. i will keep y'all updated...

Sean on NC