The MacQuake3Demo.bin file you have requested: Official Demos / Quake 3 Demo for MAC - 45.85mb is not available. Perhaps try browsing all files for the game Quake III Arena and upload any files you want to share or are missing. This is the only information we could locate:
Quake 3 Arena Demo for the MAC. Quake 3 is the ultimate deathmatch experience as seen by iD, the fathers of First Person Shooters.