Best way to auto-synchronise music between HTC One and PC got my new HTC One today and now i wanted to set up something that i can put all my desired music for the smartphone in a folder on the pc and then they get automatically synchronised on the smartphone.

is this possible? i often change my songs and i dont want to always copy them by hand, thats a pain...

Jottacloud has something in the right direction, but it isnt fully automated i guess
Playing with words: if you want a folder to sync, have you tried FolderSync? Should be perfect for this purpose. You can sync entire folders between your PC and your Android device, and also use different cloud storage services. Thanks to an integrated Tasker/Locale plugin (in the full version), you also can automate it to your wishes. But even without Tasker/Locale, it offers User specified sync interval or specific sync times.