Is it possible to use the code below in a Indicator App to play a sound together with a message?
Sorry for the delay in response.
Unfortunately, it isn't possible to use frame with sound as you describe. Indicator app has a special option for the sound notifications.
You can find more about Indicator app here - https://lametric-documentation.readthedocs.io/en/latest/guides/first-steps/first-lametric-indicator-app.html.
If you have other questions, please drop an email on firstname.lastname@example.org.