Hope you have fun when you typing via iTyper. iTyper is a software which can play sound when you typing. You can setup typing theme whatever you like. Key sounds include: spacebar, backspace, carriage return and scroll up and down, and the others will play with default keys.
PS:Please turn on "Enable access for assistive devices", if you not turn on this property,iTyper can't capture keyboard events.
For:Lion and Mountain Lion
System Preferences ---> Accessibility --> and check the Enable access for assistive devices.
System Preferences --->Security & Privacy--->Accessibility(drag and drop iTyper to this table，you can get iTyper from Finder/Applications. Please check the lock which on the bottom left corner is unlock, if it is not ,you can't drag and drop iTyper into Accessibility)
After that,please relaunch iTyper then you will hear the sound when you typing.
Thank you for your support and feel free to contact us with any comments or suggestions (firstname.lastname@example.org).
We are already working on an update, please submit any features you would like to see added to iTyper.