A quick FYI, MIDI and Audio input should now be working with the Web-IDE. For MIDI, WebMIDI support is required which is just on Chrome/Chromium-based browsers (i.e., Desktop + Android Chrome, MS Edge, but not iOS Chrome).

It's actually possible to use Web MIDI even on Firefox and Safari. There is a plugin from Jazz-soft which enables it.

See https://jazz-soft.net/download/

I used some Web MIDI demos this way before.
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Severák