Audacity

I have set up a situation where I pre modulate certain sounds (like a bassline or sine wave) and have a differant modulation rate on each audio track.  Then, I use a modified keyboard interface to jump between tracks durring a live show.  so far so good... latancy issues are fine, and audacity has not crashed yet.  can anyone think of obsticles I should look for that might make this go wrong ... with solution if you have one.   did a search and cant find where people a performing with audacity