If you are having problems outputting audio from you Hippotizer V4 try following these few simple steps
Check that the Clip has been encoded with Audio, you can do this by going into the media manager and then settings
Check that the import with audio option is selected (it should be by default)
Find the clip in the media manager and look at how many audio channels it has (the highlighted example has 6)
Check the volume on the machine is set to at-least half and the correct default device is selected. you can get to this menu by right clicking on the speaker icon in the system tray next to the clock
Check the volume in the layer is at full Check the volume in the Mix is at full
if all these settings are set correctly then audio should play out the machine if you are still having problems try to play a clip in quicktime or windows media player and see if you get any sound out of the machine, this will tell you wether it is a Hippotizer software problem or whether it is a windows sound setting or hardware fault.