Please use the Question Tags to state the name and full version number of the Story Format you are using, placing this information within the Question Title just makes it longer than it needs to be.
I suggest you look at the Audio Macros section of the story format's documentation, it describes things like: how to use the <<cacheaudio>> macro within your project's StoryInit special passage to cache the audio files: how to use the <<audio>> macro within a Passage to play one of the cached audios and how to use the same macro to alter things like the volume level of a playing audio.