I hope so. I just had my first successful test of triggering a sound via Syrinscape Online using an extension. Lots more to do before its ready for release, but at least I know the concept works. and as long as the syrinscape online player for mac works in the same manner. Its possible to trigger Syrinscape Online sounds via the https web url's, but when you do so, it creates a new tab in your browser. The most recent update of the online client has a protocol listener for syrinscape-online:// These urls trigger into the Syrinscape Online app which is installed and create no new browser windows or tabs.