Hello

I have a "big" music library in Apple Music with various audio formats from various sources (old mp3 comps from internet, CD Rips + ALAC to AAC conversion, audio extract from video , ...) and I would like all the tracks plays at the same volume...
What's the best way to do that (Batch Converter and Replay Gain (Apply ?))and the best settings to use?
Thanks a lot.
Bruno