No it isn't just for users like me who have extremely large collections it becomes difficult to work with drag and drop and I was wondering if any programmer could throw together a really simple app that could make the process a little bit more handy.
The point is that Rockbox devices just appear as an external hard drive. Any software that will sync between drives will do this for you - it doesn't need to be a Rockbox specific solution.
Also, why only Windows and OSX and not Linux?
H140, F60, S120, e260, c240, Clip, Fuze v2, Connect, MP170, Meizu M3, Nano 1G, Android