use bash builtin to detect player

[micropolis] / res / sounds / player

#!/bin/bash

PLAYER=

if type -a aplay &>/dev/null; then
	PLAYER=aplay
elif type -a afplay &>/dev/null; then
	#afplay is shipped with OS X Leopard
	PLAYER=afplay
elif type -a play &>/dev/null; then
	PLAYER=play
elif type -a mplayer &>/dev/null; then
	PLAYER="mplayer -nogui -nocache"
fi

if [ "x${PLAYER}" = "x" ]; then
	echo "Can't find audio player!"
	echo "Please make sure you have aplay, play or mplayer in your path."
	if [ "`uname`" = "Darwin" ]; then
		echo "A working play for OS X is available from:"
		echo "http://www.hieper.nl/html/play.html"
	fi
else
	exec ${PLAYER} "$@" >/dev/null 2>&1
fi