Very cool! I tried doing some signal processing stuff back in the day and got absolutely discouraged after discovering how much linear algebra was involved.

I particularly appreciate the ability to preview compression. Compression is probably what I use most when I'm editing audio and having that at my fingertips without loading Audacity or Ableton would be super nice for quick, rough changes.

One thing that I'd really like to see would be a de-essing plugin, or even better a multiband compressor.