Replay Gain for AAC files

@bryan88 wrote:

Is it possible to use Replay Gain for AAC files?

That’s exactly my question. To correct my first post: I wanted to know, if it is possible to use replay gain for AAC coded MP4 Files. I tried a lot of things (including MediaMonkey) and I could not notice any effect. I turned on replay gain for file an album and nothing happend. There is still a noticable volume difference between my musik files…