If you look at this page:
you can see that the audio samples are powered by the WPAudio plugin and that the "View Score" links are powered by WP Jquery Lightbox.
When the page is freshly loaded, clicking the play buttons starts the audio as expected.
Clicking a "View Score" while audio is playing stops the audio. Fine. But then the audio cannot be started again, none of the audio on the rest of the page either, can be started. The whole page has to be reloaded before the audio can be played again.
The Lightbox functionality doesn't seem to be affected by the audio, as you the View Score links always work whether you've listened to audio yet or not.
Thanks so much.