Default Adding Music issue

I cant seem to drop and drag music onto my Telstra HTC One since i updated to 4.3(and running Nova Prime).I refuse to use HTC Sync,as it is completly useless for anything.
I own iSyncr and tried it that way,but it only moved albums that were in My Music on Windows 7(there are afew albums in there for some reason,the rest of my albums is in Music in the Start Menu.Anyone have any ideas,as im lost....

Sent from my Aussie style HTC One