Wolfie, this is why your snip doesn't work for everyone.
//echo -s $!asctime( $calc($timezone + $sound($sfile($mp3dir*.mp3,MP3)).length / 1000) ,H:nn:ss)
$asctime( [color:red]-35774.797 ,H:nn:ss)[/color]
Your timezone must be GMT or GMT-(N) for that to work. Here, $timezone == -36000 (GMT+10)