Hope I have this in the right forum. I have MP3's and AAC's that have been ripped from CD's with a bunch of different programs over many years. I have some that I bought directly as well. What I have now is a big music library with widely varying volume levels. Is there a good program out there that can make the volume's all the same? It would be nice if I could do the whole library as a batch. One at a time would be an extremely long project. Freeware would be nice but I would certainly pay if the price is reasonable for good software.