i tried all the apps (doubletwist, isyncr etc.) but i found it to be easier just copying the music folders into my phone ; just like i do on itunes. i was just wondering if i drag a folder in to my phone when its already in there, will it copy twice? i.e i have a folder for singles that i download off sites like hotnewhiphop & when i only download one song i drag it to that folder. so will i be able to constantly drag that folder on to my phone every few days & will it only update the new songs or will it multiply every song - everytime i do this.