How can i convert files on my computer?

use this online converter for free at media-convert(dot)dom your input would be (the type of file)there asre plenty to choose from and output would be mp3or wva which ever you prefer.then download it from the site once its converted and then drag it to itunes once its done.i'd do it on here becuase it is only one file and you dont need to download alot of things for just one song