My problem with syncing on version 3 alpha seems more related to deletes or moving things in the playlist, it usually works fine if I am only adding stuff. Either way, when it doesn't work, it fails on uploading playlists taking a really, really long time, then ditto for uploading files. My solution now is that when uploading playlists is taking too long and I know it is going to fail, is to pull the power on the Empeg and restart it. This causes emplode to fail right away. The Empeg takes a while to boot up because it has to rebuild the database. Once the Empeg has finished booting, I just hit sync again on emplode and it usually works fine this time though I have had to repeat it more than once on a few occasions but I find it much easier and faster than doing the manual rebuild.