Default [Q] No music sync

Got my S4 rooted, so cable and Debugging is working. Tried to sync some music in and unable to do so. Tried Kies, Windows media, cut and paste, copy, move, send. What it does is start to push the music into the phone and stops. Have the latest drivers, so what gives. Have had Motorola phones for the past 15 years and this is the first Samsung, so I'm not doing something right. Any clues