The Calibri font was created and is distributed by Microsoft within their software products. It is not available separately from Microsoft but they have licensed Ascender to distribute the font. (See links below)
There are thousands of fonts available for Mac OS X. Some are installed as standard with the OS (See links below). Others will be installed with certain packages such as software by Adobe or...
Yes, but you have to download them from a site in a Mac format. Apple and Windows are very different when it comes to file types, it's all messed up.
http://www.1001freefonts.com/ |...
GO TO DAFONT.COM Or Downloading the PowerPoint Viewer 2007 will install it in your system. It will give you all six new Vista TrueType fonts, including calibri. - Bolaris Interactive