Blade 7000s media server

Hey does any one know the list of media files the Blade 7000s can play through the software for the Media server . Iso.image. Image. MKV ??? i HAVE TROUBLE PLAYING Certain media files with this equipment.. Can any one help me please. It does the buffering but when i go to play say this ProperDVDRIP. XVID (avi)file it buffers then all i get is the play bar menu at the bottom of the screen and a blank screen. In otherwords the file does play. wounda..