In reply to:

Emplode detects all the unattached playlists and adds them back to the root again -- looks like Jemplode doesn't do this. Is it possible for you to run Emplode?

If not, then it's certainly possible to search for orphaned playlists using JEmplode's advanced search: (type == "playlist" && refs == 0).
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Toby Speight
030103016 (80GB Mk2a, blue)
030102806 (0GB Mk2a, blue)