hello, it seems that you do not have the right codec to play the videos. players like tcpmp and windows media are jack of all trade, which meant that they're meant to play a variety of different types of files. if you have the right codec (or instructions), you'd be able to see the videos. codecs change over time, and they get obsoleted and replaced with newer technologies. you need to get the latest bunch of codecs, and that should solve the issue.