Posted from Montville, New Jersey, United States.
Since Twitch.tv decided to change their rules, which caused a lot of controversy, people are wondering how do you stream to Hitbox.tv with a Mac. There is a program called Wirecast, but you need to change some settings to make it work. Here are the screenshots of how the settings should be like.
Address should be: rtmp://live.hitbox.tv/push
Stream is your stream key
Preset is this (you need to create a custom one):