[The ear training guide for audio producers](http://training.npr.org/audio/the-ear-training-guide-for-audio-producers/) is a terrific summary of problems and fixes. Some people will probably want to bookmark, archive and save this. I know I did.

The ear training guide for audio producers [training.npr.org] is a terrific summary of problems and fixes. Some people will probably want to bookmark, archive and save this. I know I did.