I am currently using Clementine on OSX and Ubuntu - quite happy with it, the gpodder.net integration seems very useful. Gpodder.net is also supported on Android app AntennaPod, so far so ok ;)
I'd like to find a music app that will allow syncing of playlists and allow copying over of songs - in a perfect world it would also sync ratings, tags and play counts. In a magic near-future world it would also let me stream songs to my phone from the desktop client.
Please suggest Apps that at least allow playlist / song syncing, preferably both with osx and linux.