I currently have 2 WDTV live systems using Mezzmo as a media server. In the WD user interface it allows selecting of videos or music or photos, when i select for example videos the submenu generated by mezzmo lists Videos Music and Photos again, This is not present when using twonky media server if you need and examlple of what I mean. I would prefer to stay with Mezzmo for its better handling of images and meta data.