# Audio ## Overview The **Audio module** provides a way for a content author to embed a sound effect or background audio in the page. The sounds embedded with the **Audio module** must, unless they autoplay, be played via the flow controller nodes. ## Audio Properties ### **Details** (required) *Asset, defaults to a whooshing sound effect* Allows the selection of an audio file from the asset manager this is the asset that will be played by the module. ### **Loops** *Checkbox, default `disabled`* If enabled, shows the audio will loop back to the beginning after it reaches the end of the audio. ### **Autoplay** *Checkbox, default `disabled`* If enabled, attempts to play the audio immediate when the module loads {% hint style="warning" %} [Browser limitations](https://developer.mozilla.org/en-US/docs/Web/Media/Autoplay_guide) may block autoplay when a user first visits your page. A play button will appear if autoplay is blocked, requiring the user to click to begin playback. For a workaround, see Force Autoplay. {% endhint %} ## Broadcasters

On Timestamp Update Broadcast Node

### On Timestamp Update Fires when the audio playback advances to a new timestamp. | Output | Description | Type | | --------- | ----------------------------------------------- | ------ | | timestamp | The current timestamp of the audio in seconds | number | | duration | The total duration of the audio file in seconds | number | ***

On Complete Broadcast Node

### **On Complete** Fires when the audio has played through to the end. Does not trigger for looping audio. ***

On Pause Broadcast Node

### **On Pause** Fires when audio playback has been paused. ***

On Play Broadcast Node

### On Play Fires when audio playback has started or resumed. ***

On Start Broadcast Node

### **On Start** Fires when audio playback starts. Does not fire when a paused audio file is resumed. ***

On Unmute Broadcast Node

### **On Unmute** Fires when audio playback volume has been unmuted. ***

On Mute Broadcast Node

### **On Mute** Fires when the audio playback volume has been set to zero. *** ## Listeners

Mute Listener Node

### **Mute** When triggered, sets the audio playback volume to the zero. ***

Pause Listener Node

### **Pause** When triggered, pauses audio playback. ***

Play Listener Node

### **Play** When triggered, starts audio playback. ***

Unmute Listener Node

### **Unmute** When triggered, sets the audio playback volume to the previous level. ***
### Set Source When triggered, sets the current source of the audio module to the specified URL. | Input | Description | Type | | ---------- | --------------------------------- | ------ | | Source URL | The URL of the source audio file. | string |