I'm currently struggling with this bug: https://www.bountysource.com/issues/73951379-nullpointerexception-when-loading-sample. I'd like to work around it by just setting the :max-buffers in :sc-args, but I've not yet found where I'd set it. Anyone have any hints?

Ah, yes. Overtone. Last time I worked with Overtone, I had issues with settings on the SuperCollider server. My clumsy solution was opening the standard SuperCollider IDE and sending the server messages from there. Now I realize that I'm typing about something a bit different, using the external server on Windows, but maybe using the external server will save you.