Detect When PC Audio Finishes

There isn’t a built-in ARC global variable named $PCPlayingAudio for PC audio playback.

For PC audio played with Audio.playAudioFile(filename), the usual approach is:

1. Start the audio
2. Poll a flag you control, or
3. Use a known duration + sleep(), if the file length is fixed

Best simple solution: use your own flag

Since ARC doesn’t expose a built-in "PC audio is still playing" variable like it does for some EZB states, you can track it yourself in script.

JavaScript example

setVar("$PCAudioPlaying", "true")

Audio.playAudioFile("C:\\Sounds\\mysound.wav")

// If you know the file length, wait that long
sleep(3500)

setVar("$PCAudioPlaying", "false")

Better approach: use TTS audio from ARC and wait

If you’re using Audio.saySSMLWait() or Audio.saySSML(), the Wait version blocks until speaking is finished:

Audio.saySSMLWait("<speak>Hello, world.</speak>")
print("Speech finished")

That works for speech synthesis, but not for Audio.playAudioFile().

If you need to know when a file ends

ARC scripting does not currently provide a direct built-in callback or status variable for PC audio file playback completion. So your options are:

• Estimate duration of the file and sleep() for that long
• Use a script-managed variable
• Convert the file to speech/SSML if appropriate, then use the Wait version

Related variable note

ARC does have:

• $EZBPlayingAudio for EZB audio state
• $IsSpeaking for speech state

But those are not the same as PC audio file playback.

Helpful reference

• Console / Print() output: https://synthiam.com/Support/Programming/code-editor/console

If you want, I can help you write a small JavaScript or Python wrapper that plays a PC audio file and then automatically clears a flag after the correct duration.