[+rep] Volume of a song

[Decode]

I need a program that can make the volume of a song louder. +rep if you know one :)

[Wootzeh]

you can do it with itunes?
right click the song, get info, options, move volume adjustment all the way to the right.

[Robbie]

Audacity

[Decode]

you can do it with itunes?
right click the song, get info, options, move volume adjustment all the way to the right.
Its not for my ipod

Audacity
Thanks +rep :)