Adding to AT's advice if you are using GM you can increase the volume by increasing the velocity.

If the MIDI file is one from the Internet then search each track for volume settings, i.e. CC7, CC11, or CC2. Sometimes the volume settings are on a different track than the sound track.


Principal: Your child always causes trouble in school.
Me: My child causes trouble at home, do I ever call you?

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware