dropbox.com provides free cloud storage and backup (this WikiNotes website is backed up there). You can automatically save, sync, and backup all your stuff, including music and videos. Then you can access your stuff anywhere.
Dropbox is a very strong cloud computing app and worth looking into.
You get 2GB free normally, but you'll get a 500MB bonus by signing up with this link:
Dropbox.com (opens in a new window)