I'm going for a +1 on this issue. I only just discovered Sync through an article about synchronizing music between my Mac and Android devices. Great! But, apparently as many others, my music folder is on the root of my SD card. Syncing to the suggested folder is indeed useless. I think that the app developers are still behind on newest developments in Lollipop, since SD write access has been restored in stock Android. I'm unrooted and intend to remain unrooted. Therefore I have no solution. I was even thinking about forking up some $$$ in order to go 'Pro'. Luckily, I decided to run some tests before purchasing. I am uninstalling Sync for now, but hopefully there will be a reply on the subject in this topic so that I get notified of updates.