This is amazing and I've only tried it out for about 20 minutes now. I'm just learning about MIDI and sequencers and such. Is it possible yet or will it be possible to export what we build in here to other software, or at least to an audio file?
You can save it locally to a file that's in a JSON format and easy to parse. That can allow you to run it locally, or you could build some kind of exporter. Right now to export audio you'd have to record the audio output.