I have a lot of MP3's that I have downloaded over the years from various sources and am making playlists to listen to while treadmill walking and running - I put them on my iPhone or Ipod and use a pair of wireless headphones. The problem I have is that some of them are so loud I have to lose my concentration to adjust the volume down then the next song starts and it is too low to hear so the process is reversed, etc. Is there a way to bulk adjust the volume of a group of MP3's so they are all the same? Any help would be appreciated. I seem to remember a program I used to have several incarnations of Windows that would do it. My desktop and laptop are Win7 and Win10 respectively. Thanks in advance!
Jim in WV - USA