os x support for old RCX?

Hello

I have an old RCX set (with USB infrared tower) and i would like to
use it under Mac OS X. I wanted to check NQC but if i understand right
i need the Macintosh USB & Ghost communication package for USB tower,
which i couldn't find online. Actually, i'll be happy to use any
programming language i can use on a current mac. is this still
possible or is it all about NXT now?

thanks!
r