64's not quite ready yet, but here's what will be in it:

Tentative 64 CHANGES:
Option to disable removing articles for comparisons (look in Options menu). You will need to drop and readd your soups for this to function properly in your soups (it won't retroactively update)
Regex search (title regex "^[a-z]")
Track numbers are sorted numerically (actually, the same comparison is used in soups as in table column sorting, so dates are sorted properly as well)
Empty fields are left empty rather than setting to "(none)" .. a bunch of (none)'s just looks busy
Option to enable Tony Selections
Rebuild-on-PC is back (check Options panel, off by default)
Fast rebuild from memory is back (check Options panel, off by default)
Reordering of soup playlists when aggregate tags change