TiVME is an application that allows you to manage all the KWorld TVTunners attached to PC. However, you should check the manual of the software to see exactly what are the video file formats supported by the player, because as far as I know, these apps also have video players and it's possible that the video player supports only the formats created by the tunner application only.
Try installing a codec pack and then repeat the playback process: http://combined-community-codec-pack.software.informer.com/
