Back when I was still using Windows, I used a program called MP3Gain to adjust the volume of my MP3 collection. If your collection, like mine, consists out of iTunes and Amazon purchases, as well as MP3s you created from CDs you bought, different volume levels aren’t news to you.
I was happy to find the same program for Mac here. On my Mac, iTunes may deliver a tool already to cover this, but whenever I listen to my music on-the-go, I still discover different volume levels. This may be because iTunes doesn’t write the information for the volume into the MP3 and therefore every player outside iTunes will ignore this ‘normalization’.
MP3Gain instead adjusts all MP3s to your preset volume and will save this into the file. This way all players will accept the information and behave accordingly. Are there any downsides? I’m sure there are and you’re warned on their web site to remember making a full backup, but it all went smoothly for me. An issue I encountered that may be annoying for people using Backblaze is, that the changed files are now considered new and Backblaze will want to back them up again. Not really a downside, but I wanted to warn you.
Good news for Windows - and Linux users: MP3Gain is available for those systems, too. The Windows version is available here, Linux here.



