Choosing platform for a specific program

Today I started thinking about a new project, and I found one. The goal is to get a first version working in the first three months.

I'm going to write a "laser/light-show simulator" program, that you can generate such lightshows as you see on big events nowadays. The problem is the platform/language I'm going to write it in. I'm looking for something new, possibly, or maybe I can better just stick to the things I'm using now.

My question is; what platforms/languages/libraries would you recommend for doing this? Don't take my experiences in programming as you give requests, I'd like to see what you would advice without knowing my experiences with programming languages/platforms.

Thanks in advance,

William v. Doorn