Apple today released Audio Update 2007-001 which addresses an issue with version 1.0 of the Mac OS X 10.4.10 Update in which a “popping” sound might be heard with some external speakers on Intel-based Mac.
This update is recommended for all Intel-based Macs running Mac OS X 10.4.10.
Audio Update 2007-001 is available via Software Update and also as a standalone installer.
More info and download link (660KB) here.