[Wanilton]

@Rodrigo, olha não é novidade isto de compartilhar, já existia os modos SMB ou NFS, que ainda devem ser usados para tal, por conta que o UPnP, ainda está em desenvolvimento e as skin ainda precisam implementar tal recurso, as skins lidam como se existisse bases de dados locais somente, então na prática precisa ter coleções locais no cliente, o que tira o principal benefício de ter um servidor UPnP dedicado.
Veja este vídeo sobre XBMC Cliente UPnP

http://www.youtube.com/watch?feature=pla...OfPPSMyvfU

a massive update of UPnP to make XBMC a truly capable UPnP server is now part of mainline. While transcoding is not part of the update, all metadata, images, and library functions including watched and unwatched status are now available depending on your client – naturally, an XBMC client is best, though efforts are ongoing to work with the numerous alternative clients that all use slightly different specs from one another. Unfortunately, using XBMC as a UPnP server is still not the preferred method for an XBMC client. For one thing, Confluence and all current skins are designed to expect only a local database or a MySQL database masquerading as a local database, which means one would theoretically need to re-scrape the UPnP server into your local library for the TV shows link to show up in the home screen, which immediately cuts out much of the benefit of a dedicated UPnP server. As such, for now continuing to use SMB or NFS shares on your XBMC clients is still the recommended route.