The last stop in Act I, and two ideas about what happens *after* you generate, which is where the time and money actually go. **Native audio vs silent clips.** Some models now generate synchronized sound, dialogue with lip-sync, effects, ambience, sometimes music, in the same pass as the video; others hand you a silent clip to score later. We cover the 2026 frontier (Veo, Kling's multilingual Omni, Seedance, named as a churning snapshot) and why you judge it on the leaderboard's *with-audio* tab, a different ranking from the silent board. Native audio is a huge speed win for social and for temp/scratch tracks. The catches: it's a single fused layer, so no stems, no remix, no swapping the music or fixing one mispronounced word without regenerating the whole clip, plus licensing questions and the fact that pro mixing wants separate voice/music/SFX tracks with ducking. The hybrid rule: native audio for fast posts and temp tracks; silent (or replaced) for client-grade work and anything headed into a real edit with cuts, music, and retiming. Forward to the voice/lip-sync, music/SFX, and assembly-edit episodes. **Editing a shot by conversation.** Instead of re-rolling (episode 5), tell the model to change one thing: "make it sunset," "remove the jogger," "change the jacket to red." We snapshot the tools, Runway's Aleph/Edit Studio, Luma's Modify with Instructions, Kling and Pika edits, and the Artificial Analysis *video-editing* board. The discipline echoes seeds: change one variable, evaluate, stack only on a success; branch parallel options from the original. Limits and fixes: removals leave ghosts while global styles over-spread (do fragile edits first), identity wobbles on relights, on-screen text stays unreliable, and some "small" edits are full regenerations under the hood, watch the credits. Callbacks to ep1 (leaderboard tabs), ep3 (image-to-video), ep5 (edit, don't re-roll). *AI-generated podcast by OCDevel. Native-audio support and editing tools move monthly; bench your own shot.*