Hi there,

Yeah that's an insanely large library which any phone will understandably struggle with.

Please try this:

1. Turn on Selective Sync.
2. Settings/Debug -> Reset Local (make sure you choose LOCAL otherwise you'll reset everything).
3. Login and select a few playlists you want to sync.

This should work, unless the playlists you select have a ridiculous number of tracks!

Remko

MIXO DJ team