Save/export not working well on Safari

[ttencate]

"Save" opens the JSON in a new tab, where you can hit Cmd+S to save. "Export" opens a new tab which briefly displays some playback controls, but then switches to a noninteractive QuickTime logo. There seems to be no way to save the WAV from there.

This is an issue with Safari that, unfortunately, even the awesome FileSaver.js shim cannot do anything about: eligrey/FileSaver.js#12

We need to detect whether this is broken, and show the user a helpful warning.

[ttencate]

I'm going to close this because there's nothing I can do until Safari gets its act together or somebody comes up with a workaround that actually works.