Music On Console is a lightweight music player which consists of 2 parts, a server (Moc) and a player/interface (Mocp).
PHP example file
<?php $ret = exec("sudo mocp -S", $out, $err); print_r($ret); print_r($out); print_r($err); $ret = exec("amixer -q sset Master 70%", $out, $err); $ret = exec("sudo mocp -l /music/sounds/01.mp3", $out, $err); sleep(10); $ret = exec("sudo mocp -l /music/sounds/02.mp3", $out, $err); sleep(10); $ret = exec("amixer -q sset Master 80%", $out, $err); sleep(10); $ret = exec("amixer -q sset Master 90%", $out, $err); print_r($ret); print_r($out); print_r($err); ?>