Depends if anyone here uses OSX, I don't know the first thing about it or wine/RPGhub - the instructions at the end seem to be geared towards linux though.
You could either try RPGhub or this osx wine tutorial that I found on google, I guess. http://xtynn.tumblr.com/post/43724267432/yume-2kki-and-flow-on-mac
Can't guarantee it'll work though.