I made a distributable dmg package of RetroArch + RA-Phoenix for OS X 10.7 (Lion), if someone would like to test it for me. 64-bit Intel only.
You can download it here: http://www.mediafire.com/?iwjjlqlwrs00eba
I also built some (all?) of the libretro libraries, which you can download here: http://www.mediafire.com/?8b5fy9bny4b301y
Some notes about it: the actual retroarch executable is inside of the ‘RetroArch Binary’ subfolder. Don’t move it out of there. Likewise, the libraries RetroArch requires to run are located in the Frameworks directory, so don’t move them around either. I tested the 3 bsnes-derived libretros but none of the others.
If this package and/or libraries works for you (or doesn’t), please let me know.