Just thought I'd give a quick Mac update, since this is now many, many years out of date:
1. THE GOOD: For the most part, the easiest way to burn games on a Mac appears to be using LiquidCD. The latest version of LiquidCD burns perfectly good, playable discs from DiscJuggler images (.CDI), with one notable exception: the "filled" images (ones packed with dummy data to "fill" the disc and thus push the data to the outer parts of the disc) don't work. But any Dreamcast .CDI image that is its natural size, and not in excess of 700MB, seems to burn just fine. No more CDI conversions for Mac users!
2. THE BAD: Pretty much every Mac-specific Dreamcast tool is now not only out of date, but non-functional. I was quite disappointed to load up Mac Dream Tool (for the first time in several years) just to get the following message:
Back in the heyday of DC homebrew, Macs were PowerPC-based. They started switching to x86 in 2006, but maintained software compatibility through a wrapper built into the OS. However, that was removed in the move from Leopard to Snow Leopard, and now with Lion, support for PowerPC apps is long gone.
Cumulatively, what this means is: it is now just as easy for Mac users to burn pre-existing .cdi images as it is for Windows users. On the other hand, Mac users are completely screwed if they want to burn something that is *not* available in .cdi format, as all the old image building and conversion tools are not compatible with modern OSX.
I don't suppose there's any chance of an update to Mac Dream Tool...?