How do I record audio from internal audio and microphone?

You are trying to setup a way to record the audio within the game, or record first, and then put the audio into the game??

I'm still a bit confused. If you are looking to use audio from a pre-existing video. Google "extract music from video", there are a lot of options available to basically pull audio from videos.

If you are looking to add music to a video, that is possible as well. I personally use Camtasia studio to create videos, but there are a lot of other options for that also.

Ahh, that makes sense now. That's a whole other ball of wax, and I'm not sure how to answer it. Maybe someone smarter than me can help out?

I did find this previous thread here: construct.net/en/forum/construct-3/plugin-sdk-10/request-recorder-js-plugin-145404

Which may be of help? Good luck with your project! I hope you can sort it out. But, going by that thread I linked to. It seems there is a built in option to record gameplay(might not be what you are looking for). Also, you may find the plugin there useful, or another plugin that will do the trick.

Sorry I couldn't more helpful.