Hi aurora72,

In mplayer preferences (right click>settings>preferences) you can also set auto synchronisation factor to 30 to help smooth a/v sync problems. You could also allow framedrop which should also help.

PS - By default Ambient will only show files/folders which have an icon (eg a file/drawer named 'foo' would have an icon named 'foo.info'). This default behaviour can be changed in Ambient settings should you desire (rmb on desktop>Settings>Ambient>Window>View Behaviour).
You can also override this default behaviour for individual drawers by 'snapshotting' using the context menus - for example you may want to have the drawer containing your pictures set to display thumbnails rather than icons. (Note that this only works where the drawer has an icon, since this is where the snapshot information is held.)

[ Edited by boot_wb 28.01.2013 - 12:39 ]