start up sounds

ok i generaly only use macs for school purposes, so i dont know much about them. i was wondering how do i change the start up sound. like when you just start the mac it makes a sound. i want to change that to play a song how do i go about doing that.

There is no way to change what the sound but you can disable it or change the volume with an app called Startup Sound http://www5e.biglobe.ne.jp/~arcana/software.en.html

ok thanks for the help