LinuxQuestions.org - simple cron job: not working

I wrote a scrpit that plays a song (an MP3)

Code:

#!/bin/bash

                                                                                                                            

/usr/bin/mpg123 /home/robert/wakeup.mp3

very simple script, almost pointless to have the script but it's there and it works

i made a cron job to run this script at 8 am every day:

Code:

0 8 * * * robert /home/robert/alarm > /dev/null 2>&1

i ran the /home/robert/alarm > /dev/null 2>&1 and it plays the song and
doesnt output all the extra text that comes with runnign mpg123.

now, i decided to make a cron job to run this every 5 minutes so i could test it
out now (to see if it works).

Code:

*/5 * * * * ....(same as above)

i get this in my syslog ( /var/log/messages)

Code:

Oct 31 00:30:00 decatur CRON[5523]: (robert) CMD (/home/robert/alarm > /dev/null 2>&1)

Oct 31 00:30:00 decatur CRON[5524]: (root) CMD (test -x /usr/sbin/run-crons && /usr/sbin/run-crons )

Oct 31 00:35:00 decatur CRON[5542]: (robert) CMD (/home/robert/alarm > /dev/null 2>&1)

Oct 31 00:40:00 decatur CRON[5550]: (robert) CMD (/home/robert/alarm > /dev/null 2>&1)

but i hear no music. it works fine in the console but nada when cron plays it.

The goal is to use my computer as my alarm clock :)

im using Vixie cron in Gentoo (vcron).