I have a Galaxy S3 and a Sony Walkman (running 4.0) and I want to sync the music folder between these two devices when connected to my laptop. The Sony is my primary media player but sometimes I don't have it with me and the S3 works better with my bluetooth speaker as well. Is there anything out there where my laptop will sync the Music folder on the Sony with the S3? I'm not looking to use dropbox as it doesn't have enough space for my needs. Thanks!