winmx is a computer program, it doesn't need to eat - and if it did then it would probably live on junk food, not fruit
not many people use the mac operating system due to the fact that it is basically having a PC with higher price tag and an OS that doesn't run anything (the newer ones literally are a £200 PC with an apple logo slapped on the side and OSX installed) so i can't say i know for sure if it does work or not, but i would guess you should be able to get it working under wine or equivalent (the most widely recognised OSX version of wine is darwine, but there are other ports) - best thing to do is to try it, worst that'll happen is you find out it didn't run
