Right Click and "Save File As" or "Save Target As" to save a copy to your harddrive.
This should help playback for the various larger files.

2005-2006 Skills Tape

2004-2005 Skills Tape

2004 NCA Nationals Prelims

also, try installing this to help play the video
http://download.divxmovies.com/XviD-Dec-160703.exe

2003-2004 Skills Tape File 2

2003 NCA Nationals Prelims

2002-2003 Skills Tape

2001-2002 Skills Tape

2001 NCA Nationals Finals(Grand Champions)

2000-2001 Skills Tape