It should be compiled as a .bsp in your /maps folder in q3ut4 for it to be found. I think all the other stuff needs to be in the appropriate folders as mentioned above. If you're having trouble beyond that, it might be that these folders live somewhere else on a mac (sorry but I have zero experience with OSX).
<JohnnyEnglish> that was hours ago, I've been out for a run since then, topped up my pond, fed the fish, took daughter to post office to collect book that postman couldn't deliver, watered tomatos, stood and pondered for 20 minutes and smoked a water pipe
<JohnnyEnglish> also painted my toe nails pink to match this new bag I found
<JohnnyEnglish> and made a carpet from some belly button fluff I found in the cat