All the browsers supported should play all the sounds correctly, except network problems when the sounds cannot be loaded properly.
You should try to reload the page a couple of times to load all the items properly.
Posted in: 929 : FAQ, Chain Solitaire : FAQ, Connexion : FAQ, Crazy Train : FAQ, Flush It! : FAQ, Pick 11 : FAQ, Solitaire Flush & Clash : FAQ, Take The Cake : FAQ, Towers Battle Solitaire : FAQ, Towers Solitaire : FAQ, TriPeaks Solitaire Challenge : Help & Rules