When adding an html5 audio player to SellerDeck, SD does not add the usual 'acatalog' to the source files on the home page.
You need to put a blockif and have different source locations for home page and not home page: thus:
Here is the image: 
You need to put a blockif and have different source locations for home page and not home page: thus:
Code:
<button class="playpause" type="button" onclick="aud_play_pause()"><img src="playpause15.png" style="vertical-align:middle;" /> audio</button>
<script>
function aud_play_pause() {
var myAudio = document.getElementById("myTune");
if (myAudio.paused) {
myAudio.play();
} else {
myAudio.pause();
}
}
</script>
<audio autoplay loop id="myTune">
<actinic:block if="%3cactinic%3avariable%20name%3d%22IsBrochureHomePage%22%20%2f%3e%20%3d%3d%20false">
<source src="audiofile.ogg" type="audio/ogg">
<source src="audiofile.mp3" type="audio/mpeg">
</actinic:block>
<actinic:block if="%3cactinic%3avariable%20name%3d%22IsBrochureHomePage%22%20%2f%3e%20%3d%3d%20true">
<source src="acatalog/audiofile.ogg" type="audio/ogg">
<source src="acatalog/audiofile.mp3" type="audio/mpeg">
</actinic:block>
Your browser does not support the audio element.
</audio>