EC2) multimedia nodes

Okay, let's try and say it as a geek ;) The main idea would be to have:
- "everything is a cluster of nodes", meaning that we have but ANY traditional drupal content type can embed a streaming MP3 with the spoken text for the node, and/or a video.
- no fixed starting point (a node can be born as text and later add up video/picture/audio or as any of the other formats)
- a "multimedia cluster" should start to stream its audio content (if present) as soon as it's navigated to.
- a "cluster" should have audio links streaming audio help texts