I have played with the quality settings, setting the default for the editor, standalone executables and web games to beautiful, then making sure beautiful has anti-aliasing on (4x multi sampling) but it never works. I have a very simple little prototype with no fancy settings (2 little cubes and a square frame in the scene). I know post-processing effects are a Pro feature, but I haven't found definitive documentation stating whether anti-aliasing is also only for Pro. If you can tell me for sure if you use anti-aliasing with the free version, it will help me either forget about trying this or looking for the cause of the problem. Thanks in advance!
Anti-aliasing isn't a post-processing effect, it's hardware, and yes it's supported as long as your hardware can do it.