I have iTunes and Sonos on my PC. The iTunes music library is on the PC and the Sonos music library is on a NAS drive. Updates to the album artwork in iTunes is updated in Sonos when I go to to Manage and Update Music library. This also used to update the Sonos music library with any albums I added to the iTunes Music library. I have just added some new albums to the iTunes music library and these are not getting updated in the Sonos music library. How do I get the new albums into Sonos?