Let me answer my own question.. from the empeg chat room on IRC:

<SE_Brad> OMG! My database rebuild went from 16 minutes to 8 minutes using Mark Lord's fidsift and now to less than 30 seconds using Jemplode!

I'm using 2.00final on the player and Jemplode 67! Way to go! And to think, just today I was going on and on about how cool the "sync in background" feature was! Now I only get to enjoy it for 30 seconds!

I just tested on the player (it's in the basement, so I used Tony's empegFace to do this) I browsed my playlists and the songs are where I moved them!

This is so cool!