You will need a few items to get the files to work.  First, download a copy of the demo version of the Light-O-Rama software. http://www.lightorama.com/demo.php  This demo software is the full version of Light-O-Rama, except you can not use it to actually control Christmas lights.  It's a great way to see how the software works and if it's right for you.   I personally think you will find it very easy to learn.   This software is required to play the files on your computer because all the files on this website are only compatible with the vendor Light-O-Rama.  [more]

Next, you will need a copy of the audio file.  For example, if you download the Jingle Bells file, then read the information on the sequence page and get a copy of the correct audio.  In the software, you'll need to select EDIT ---->  AUDIO FILE and browse to the location of the audio file on your computer.  Now, you will be able to play the sequence and watch the animation (if the original author provicded the animation.)