Emplode Random Song Destruction: 2.0beta11, Hijack 276

In one case, after a Wendy Flag edit (probably inside of a Soup View
before I found out that doesn't work), during syncing I got a warning
about a playlist having an inconsistent number of children. (A
playlist unrelated to the ones I was doing wendy flag edits upon.)
Sure enough, I look and a song (Track 3) is now missing from the
middle of the album and the sequence numbers of the following tracks
have been renumbered to move them up to fill the gap.

The good news is that the database consistency checks caught it.
The bad news is that this is a worrisome bug and I probably haven't
given enough information to be able to track it down.