Manually adjusting each song's volume

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http://forums.androidcentral.com – I'm coming from an ipod, hence itunes. There's an option in itunes that allows me to manually adjust each song's volume because "equalizers" nowadays just don't do the job. I have tried mp3gain and no it doesn't work that well either. The only solution I have found to making all my songs the exact same volume is itunes. Is there anything like this for my Nexus 4? If not, I'm probably going to stick to using my ipod for music. I simply can't be bothered to adjust my phone volume for different songs. I'd rather do it once and not have to worry about it ever again. (HowTos)