I have updated some documentation on the Wiki for OS X - related information about the DOM and the Refinery:
http://www.collada.org/mediawiki/index. … ing_up#Mac
http://www.collada.org/mediawiki/index. … n_Mac_OS_X
Until the Mac-builds of the DOM and the Refinery are bundled with next public release, you can download precompiled binaries of the SVN-versions from here:
http://stud4.tuwien.ac.at/~e0425503/col … _binaries/
If you encounter any issues please post here or send me a PM.