Accent sound files

Trying to teach students (or yourself) the difference between ima (now) and ima (lounge) and other words? The site: http://sp.cis.iwate-u.ac.jp/sp/lesson/j/doc/accentl.html provides sound files in the page with pronunciation. It's from the Introduction to Japanese Language for Nihongo Learning with Speech and there are plenty of other sounds, words, dictation quizzes and links. If you haven't already seen this site it is definately worth a look. It isn't very attractive but the content is terrific.