I've put some music on a USB stick and it works perfectly.   The problem is that all the tracks seem to have different sound levels and, to listen in comfort, I'm constantly having to turn the volume up or down.   Does anyone know of any software that can set all the levels to the same volume?

It's OK I've cracked it.

How? 

I have the same issue on an SD card.

I'll write out the instructions Tom as it is a rather fiddly job and I want to be accurate.   I'll then copy them and paste them on here.   It involves downloading a piece of free software - Audacity.

There you go @TomsFocus

First put two folders on your desktop. One for the original music (I called mine ‘car music’) and the other for the ‘normalised’ music. Copy the music from your card into the ‘car music’ folder.

Download ‘Audacity’ it’s free software from https://www.audacityteam.org/

Run the program and click on ‘File’ – Open

Navigate to your desktop and the ‘car music’ folder and click on the first piece of music.

Once the file has opened hit Control A which will select the music.

Along the top of the window you will see ‘Effect’ click on that and you will get a drop down menu, Click on ‘Normalise’

Set the Normalise maximum amplitude to -2 (minus two) and make sure there is a tick against it. Also put a tick against ‘Remove DC offset.

Click OK.

Click on File – Export – Export as MP3

Click on Save

Click on OK

Save in the ‘car music’ folder.

Click on File – Close – No

Go to the next piece of music and repeat the process. The software will save the two folders and will always look to open in ‘car music’ and save to ‘normalised’ music

It’s a lot quicker to do than it is to explain it. I did 100 files this afternoon.

So Audacity rebalances the waveform and bitrare?

Sent from my SM-G965F using Tapatalk

I'm no expert Clive.   Not sure what it does.   I found out by trial and error.   It works though.

I've used YTD (you tube downloader) for this purpose.

There's an awful lot more that you can do with Audacity.   It's a brilliant piece of software.