JAEMS  Thanks for the review. I'd be interested to hear if you can help the built-in on the iMac through the Mic sensitivity and speed settings.   
(Version 1.3)

JAEMS  Hi DHESS01. I am not sure if you got version 1.1 because the link from this page was incorrect when you wrote your comment. The new version should be 9.9 Mb and can be downloaded from this page now. Other than that, I haven't heard from any others who couldn't start the app. One option is to erase the preferences and let TapNTune rebuild them on open. Also, another strange bug is that if you rename the app, it might not open at all. I'll be addressing that in the next update. Are you running any external audio interfaces?   
(Version 1.1)

JAEMS  Yes! Please bring back the Bookmark folder! Otherwise, a beautiful app, as usual.   
(Version 3.0.1)

JAEMS  Max 5 is everything we have been waiting for. I wrote a comprehensive user review with pictures here:

http://jnote.org/162

Highlights of Max 5 include jWeb, text buttons, presentation mode and improved graphics all around.   
(Version 5.0.1)