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