Dear list, I’m interesting in embedding media clip objects (sounds) in PDF documents and using them with JavaScript (something I’d have to learn later). 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, Pablo -- http://www.ousia.tk