I’ve come across a lot of forum postings by Zune newbies asking how to sync music, picture, and video files to their new Zunes. In my opinion, the easiest way is to set up sync folders on your PC which the Zune Software will monitor and sync the contents. So how do you do this? The graphic image below show the setup page in the Zune Software for defining the sync folders:
(click on image to enlarge it)
You get to this setup screen in your Zune Software under “Settings” and “Software”. Here, you can define one or more monitored folders for Music, Pictures, Video, and Podcasts (individually). Once you do this, you can copy any appropriate file into them to have that file synced with your Zune. Note, that you can’t put a music file (.mp3) in the video sync folder and expect the Zune to sync it. Also, all of these files are being synced, so removing a file from this sync folder will also remove it from your Zune device the next time you sync it.