been cleaning out some of my bookmarks...
If you're into using software like ableton live or other pieces of software such as maxmsp for live performances then this website may be of interest to you.
It has a bunch of resources related to the art of "controllerism"
"Controllerism is the art of manipulating sounds and creating music live using computer controllers and software.
This website is a collection of information and resources for the controllerist community."
You can find videos where artists discuss their approach to using software and controllers in a live situation, as well as links to a great deal of related websites.