Okay, so I have this huge mp3 collection (duh) and I encoded them with several dfiferent encoders over the years. They need to be normalized. I understand that this will inject noise. I understand that some people think I should re-encode from CD my entire collection using a modern encoder, but I'm not going to do that. I'm looking for an automated solution that I can apply to my entire collection and just wait for it to finish. I could use a decoder, normalizer and encoder in sequence, but then I would have to strip the old tag info and tack it back on to the new mp3. Ideally, I would like some software that already does all this and could observe an mp3's peak decoded level, and for example, normalize (to x%) only if the current peak is y% or less, or something like that. Does anyone know of anything like that?