The two things in the subject seem to be incompatible. Do I need to use www.oggVorbis instead (which means waiting for a download to complete before any of it can be played back), in order to get a functional seeking playhead? That’s not ideal, but it’s better than not being able to have one at all.
For now … Yes. We are working on a fix for that, though. Keep in mind that for-/back-ward skipping in online content(when its working) will inevitable cause some latency or halts in the playback on slow connections. So maybe downloading it first will be the ideal solution.
cheers,
Søren