newbe,
Just to confirm, you are converting to .AMV videos right?
What you can do is try putting the SAMPLE videos available on our site onto your player and see if they play or hang. If they play, then it might just be the settings you used when you converted the videos.
You can download the sample video files here:
http://www.mympxplayer.org/sample-videos-dc7.html.
Let us know of the result.