Instagram: support audio_configuration (attach a track from Instagram's audio library)

Meta shipped the Instagram Audio API on 1 June 2026: audio_configuration lets you attach a track from Instagram's own library at publish time, with separate volume levels for the music and the original audio, so a voiceover survives intact.

It is only available on "Instagram API with Facebook Login", so accounts connected through Zernio's Instagram Login flow cannot reach it. Two things would unlock it: an optional Facebook-Login connection for Instagram alongside the current flow, and audio_configuration exposed in platformSpecificData.

Why this matters more than "nice to have music": Instagram lists taps through to the audio page as one of the four main things it predicts when ranking Reels. A Reel with a library track gets a real audio page that other people can browse and reuse. A Reel with a bundled music file gets "Original Audio" and that signal is simply absent — no amount of licensing work on our side reproduces it.

Bundling our own tracks also does not scale: catalogue licences that allow redistribution inside a product are the expensive tier, and none of it gives us the audio page.

We publish Reels daily through Zernio and would be glad to test this early.