https://www.gog.com/forum/europa_universalis_series/europe_universalis_and_windows_10/post6

Go through all of these options and you're good. I guess, heh ;)

Hello all,

It seems the solution on this forum for music problem on Windows 10 does not work for me.
But I found this DxWnd tool that works perfectly for me.
You can find it on the sourceforge (Can't post link now, just google DxWnd)

You don't need to install it, just extract it to some folder.
After you start the tool, set the option to use expert mode.
And drag and drop the europa.exe in EU1 folder to the tool's window.
In the sound tab, check the option to emulate CD soundtrack.
Then delete winmm.dll from the EU1 installed folder, start the game and DONE!
That works for me and the music will be played on Windows 10 again.
Bonus is that now you can play EU1 in windowed mode

I do not believe this! THIS IS THE SOLUTION. It really works for me, so now I can enjoy the game with background music! Thank you very much!

This post should be stickied. It really is the solution for enabling music!

Simply deleting winmm.dll only gets it to run on Windows 10. For music you need DxWnd.

Also I would like to add the game runs at a native resolution of 800x600. If you resize the window to make it larger, the in-game text becomes unreadable due to being more blocky.

In DxWnd, Modify europa.exe and go to the DirectX tab. Check the box "Full bilinear filter". That will smooth out the graphics on scaling the window.

DxWnd does actually restore the music but I prefer running the game with dgvoodoo at a forced 4:3 resolution that is close to my monitors native resolution as this makes the game start and run smoother. As the music is just a single file being repeated all the time I instead chose to go the route of playing it via player in loop mode.

As all of this can be automated, I worte a batch file which takes care of starting the game, the music and closing the player after ending the game. Here are the lines:

D:
cd "D:\Programme\GOG\Europa Universalis"
start europa.exe
Timeout /t 0
REM time at 105 makes the music start after the intro if not skipped

cd "D:\Programme\GOG\Europa Universalis\MUSIC"
start Track02.ogg

pause
taskkill /IM vlc.exe /F

If you want to use these lines you have to adjust the paths according to your installation folder.