Video playback in Sequencer? How?

I have a video (a media file texture) that I need to play in the Sequencer. I´m unable to make this work. The video plays just fine in Simulation mode. But not in a Sequence.

Googling led me to several years old threads with devs stating this is not possible, in here I was unsuccessful as well. It seems like something incredibly basic.

Is it possible? How do I do it? Thanks!