Just replace Line 34 in haiku-player.js:
$("div.haiku-text-player").jPlayer("stop");
with this code:
if($.browser.mozilla) {
$("div[id^=haiku-text-player]").each(function() {
if($(this).is(":visible")) $(this).jPlayer("stop");
})
} else {
$("div.haiku-text-player").jPlayer("stop");
}
works perfect on Firefox and doesn’t break anything on other browsers!!!