Parallel 32bit and 64bit installations of some apps

Hi all, I'm running 10.1 x_86-64 on my laptop. The only gripe I have is with certain media apps. In particular, the lack of x_86-64 builds of the Flashplayer plugin and the windows media codecs. So, I was wondering if it would be possible to have 64bit and 32bit versions of the affected apps installed. They would be Firefox and Mplayer, presumably with all their associated libraries. How complex would that end up being? Any comments welcome. Dylan -- "The man who strikes first admits that his ideas have given out." (Chinese Proverb) -- "The man who strikes first admits that his ideas have given out." (Chinese Proverb)