Ok. So I wanted to move my iTunes music library to my new Galaxy S4. I tried a bunch of solutions but none worked until I tried "Easy Phone Sync" - it worked perfectly. All the other solutions (SyncTunes and DoubleTwist) would not connect either through direct USB or through wireless. Very frustrating and I spent a lot of time trying to get them to work. Easy Phone Sync worked well. Super easy. Highly recommend for the Galaxy S4. I also signed up for Google Play Music and moved all my iTunes music up to Google Play Music. That way I can also have it up in the Google cloud.