With no id, returns the duration of the whole clip; with one, the duration
of the region that instance is playing, which differs when the instance was
started from a sprite.
Parameters
sound_name: string
Audio clip name (case-sensitive).
Optionalid: number
Sound instance ID. Omit for the whole clip.
Returns number
Duration in seconds, or 0 while the clip is still loading.
Get the duration of an audio clip, in seconds.
With no
id, returns the duration of the whole clip; with one, the duration of the region that instance is playing, which differs when the instance was started from a sprite.