AutocorrectBeeper

AutocorrectBeeper is a way for Mac OS X 10.7 to alert you when a text auto-correction takes place: the simple app can simple be dragged to the Applications folder at the root of your drive, and running it provides you with simple preferences for choosing between the default sounds available on OS X 10.7 Lion.

As an auto-correct happens, your Mac will beep at you when a correction for a misspelled word is offered. A handy blacklist function is available so you can get beeped in some apps, but not others.