Only the user can establish if Media Player or Winamp is better. Winamp is an all around audio and video player that it's focused on the playback of Audio files while Windows Media Player is focused on the playback of video files. Both applications are good, but if you don't have codecs installed, Windows Media Player will have support only for a few video files. From this point of view, Winamp is better. It can play videos without additional codecs.