Audacious - OLD, PLEASE USE GITHUB DISCUSSIONS/ISSUES

Hello, first thanks for admit in this dev forum.

Trying to install the latest svn version of vumeter plugin from http://vumeterplugin.sourceforge.net/ and got this error from build process:

plugin_main.c:3:30: fatal error: audacious/plugin.h: No such file or directory
#include <audacious/plugin.h>

compilation terminated.
Makefile:426: recipe for target 'plugin_main.lo' failed
make²: *** [plugin_main.lo] Error 1

Checking the code, it seems the library <plugin.h> in new audacious codebase is deprecated. This plugin is based in gtk2 code, but not updated to new plugin codebase.

There's a news update from the vumeter plugin sourceforge website:

"Ps. It seems that Audacious 3.6 has reverted back to using gtk2. So maybe one day this plugin will get one more update :-]"

My question is: What could be done in this issue?, I have no clues about the use of new plugin codebase, and very few knowledge in coding, so I wonder if coders here can help in this task, i.e. a patch, so we can enjoy an updated version of this plugin to latest 3.6.x version.

Thanks in advance.