Can I edit program parameters from a Windows PC/Mac, etc?

Yes.
Please use TORAIZ AS-1 Sound Editor LE, a dedicated program editing software released from Soundtower Inc.
The latest version of TORAIZ AS-1 Sound Editor LE and the instruction manual can be downloaded from the website of Soundtower Inc.
http://www.soundtower.com/toraiz/

To inquire regarding TORAIZ AS-1 Sound Editor LE, please contact Soundtower Inc. through their website.