The Xiph Quicktime Components provide support for Ogg files and their related family of fully free and open multimedia technologies in any QuickTime-based application. Foundation provides family of free and fully open multimedia compression algorithms and file formats, including:

Xiph QuickTime Components (XiphQT) make those compression formats available to any QuickTime-based application, e.g. QuickTime Player, iTunes, and iLife, iWork and Final Cut Studio applications.

96x96 - should be just fine for the apple's page

265x93 - almost definitely too wide :( (other logos are 130px wide max)

130x46 - size should be OK, but doesn't look too good.

Links: Apple 3rd party codecs page