With the current version of JWPlayer, there is a problem in IE 6 + IE 7. When returning to an embedded audio page after the first visit, the whole player becomes blank / black (but it appears correctly on the first visit). I have seen this on two different PCs, one with IE7 and one in IE6, but the problem doesn't exist in Firefox.
Here is an image to show the blank player:
I'm just hoping that the problem goes away with the new version of JWPlayer.
+