Sure. By default SublimeVideo always works on localhost and 127.0.0.1. If you want to use a more specific development domain, please edit your site settings.
You don’t have to. You may share the same player across all your subdomains via the wildcard option.
No, you can add your staging domain to the staging domains field. Learn more.
You don’t have to. You may add these domains to the alias domains field. Learn more.
In the future, we intend to provide you with even more choices as we will develop an integrated encoding and hosting service directly available on SublimeVideo.