Thanks for your quick reply, I tried what you've said and its still giving an error, this is how I did it...
<events name="watersound"
onnewpano="playsound(watersound, plugins/ocean-wave-2.mp3|plugins/ocean-wave-2.ogg, loops=0);"
/>
<events name="music"
onnewpano="playsound(music, plugins/music.mp3|plugins/music.ogg, loops=0);"
/>
regarding with the other error
ERROR: plugin[screen] loading error: skin/screen.png
file is there because its showing in Safari and Google chrome desktop, only in Firefox it is not showing.
Alex