To add your own song to Guitar Hero III, you will need an MP3 or OGG file of the song you wish to add. In addition, you will also need either a chart file or MIDI file for the guitar notes. Luckily, the folks at slicelive.com have a library of thousands of chart files for songs. To download songs for Guitar Hero III, first you need the game on either Xbox or PlayStation 3 (DLC for Wii will be coming soon, the PC and PlayStation 2 versions do not support it), and a. Guitar hero 3 is the third version of guitar hero game series. It was released on different consoles such as Wii, Xbox , PlayStation 2, PlayStation 3, Apple computers and MS Windows. Legends of Rock (guitar hero III) features 70+ songs on its media that incorporates single player songs, co-op career exclusive and bonus songs.