Everything was seeming to work fine till I asked rockbox to compile/build a database and it shows it doing it, even showing a "scanning disk" message when i reboot it. However, the database shows nothing at all!
Is the database menu totally empty (no submenus for Artist / Genre / etc.), or does it just not show your tracks?
The database schema was changed in Rockbox 3.8, requiring a reinitialization of the database when upgrading from an earlier version (database settings → Initialize Now). (If you'd like to retain the playback statistics from your old database, you need to export them (database settings → Export Modifications)
prior to upgrading; that is, using Rockbox 3.7. If you still have the old database around, you can downgrade to 3.7 to do the export. The exported file should be reimported automatically when you reinitialize the database with Rockbox 3.9.)
Once the DB has been rebuilt, your tracks should show up after the next reboot. If that doesn't work, please delete your database files (
/.rockbox/database*.*) before retrying the process. (You should file a bug report if this workaround is required.)