描述

This function will unload all the sounds that are flagged as belonging to the given Audio Group into memory. The function will return true if unloading is initiated and false if the group ID is invalid, or it has already been flagged for unloading. Note that any audio currently being played when this function is called will be stopped.

语法：

audio_group_unload(groupID);

返回：

Boolean（布尔值）

例如：

if audio_group_is_loaded(audiogroup_level1)
   {
   audio_group_unload(audiogroup_level1);
   }

The above code checks to see if an audio group has been loaded and if it has it unloads it.