What is the name of the song used in episode 4 Artisic Anrchy towards the end of it where an old man is being arrested and it's sunset and Mugen,Fuu, and Jin are on a bridge?

Well if you can't find out I can get you ALL the tracks, so you can sort it out your self by sound.

I found it.It's called Old Man's Promise but I can't find the mp3 for it so if you don't mind sending it to me I'd appreciate it.