Currently Being ModeratedFeb 3, 2013 12:33 AM (in response to lauriedasz)
For purchased items you can select in settings (next to the import button at the bottom of the Home Share page) to automatically transfer new purchases.
This will not work for ripped CDs. I use the import function.
First select the view in Home Share to Music and then filter it by selecting not in my library. Select the songs I want and click Import