lick="javascript:loadClassListFrame('treefortress/sound/class-list.html');">addTween</a>(type:String, startVolume:Number, endVolume:Number, duration:Number) &mdash; method,  class treefortress.sound.<a href="treefortress/sound/SoundManager.html" onclick="javascript:loadClassListFrame('treefortress/sound/class-list.html');">SoundManager</a></td></tr><tr><td width="20"></td><td></td></tr><tr><td class="idxrow" colspan="2"><a href="treefortress/sound/SoundInstance.html#allowMultiple" onclick="javascript:loadCl