| Key | Description | Availability |
|---|
| autobuffer | A Boolean attribute; if specified, the audio will automatically begin being downloaded, even if not set to automatically play. | |
| autoplay | A Boolean attribute; if specified (even if the value is "false"!), the audio will automatically begin to play back as soon as it can do so without stopping to finish loading the data. | |
| buffered | An attribute you can read to determine which time ranges of the media have been buffered. | |
| controls | If this attribute is present, the browser will offer controls to allow the user to control audio playback, including volume, seeking, and pause/resume playback. | |
| loop | A Boolean attribute; if specified, we will, upon reaching the end of the audio, automatically seek back to the start. | |
| mozcurrentsampleoffset | The offset, specified as the number of samples since the beginning of the audio stream, at which the audio is currently playing. | |
| muted | A Boolean attribute which indicates whether the audio will be initially silenced. | |
| preload | This enumerated attribute is intended to provide a hint to the browser about what the author thinks will lead to the best user experience. | |
| src | The URL of the audio to embed. | |