Abstract: Disclosed are a media file reproducing system and a method thereof capable of easily reproducing a media file inside a file server that does not provide a UPnP content directory service (CDS) through a UPnP media renderer connected to a UPnP-based network. The media file reproducing method comprises: receiving position information of a filer server that provides a file transfer protocol service and a distributed file service through a media server connected to the UPnP-based network; and reproducing the media filed inside the file server through the media renderer connected to the UPnP-based network based on the position information.

Abstract: A multicast streaming service method and system thereof allow effective control for multicast streaming in UPnP by defining actions such as MulticastStart( ), Join( ), Leave( ) and the like to allow a multicast service under a UPnP AV standard. The multicast streaming service method and system comprise checking contents by a control point and instructing a media server to start multicast streaming by the control point; informing, by the media server, a multicast group address to the control point for receiving the corresponding contents; informing, by the control point, the multicast group address to a plurality of media renderers; and receiving, by the media renderers, the corresponding contents upon joining by using the multicast group address and checking the multicast group address.