I found the \useexternalsoundtrack command, but I don’t get it working (https://mailman.ntg.nl/pipermail/ntg-context/2006/016503.html).
I don’t mean that Adobe is crappy, but that no sound is embedded or referenced in the PDF document itself. Or at least, I don’t find either of them.
lpdf-wid.lua seems to contain the functionality, but I don’t know how to use it in a ConTeXt document.
Does anyone know how to use the functionality shown in lpdf-wid.lua?
Many thanks for your help,