Silence instead of MIDI music in custom WAD

[cyb3rc001]

I am trying to add custom MIDI music into custom WAD.

However, on the levels where it's played there are silence instead of particular music (using sourceport Zandronum).

I am following this tutorial on DOOM wiki: http://doom.wikia.com/wiki/Adding_custom_music

I would glad to recieve any help.

 

Here is the WAD and music.

SLUTKILLER_WAD.zip

[xdarkmasterx]

The file format is invalid, they are .rmid files, but should be .mid or .mus.