No just the fakeprecache sound method with the * before the filename. I may have foolishly saved over the changed version I made but I'll try to replicate it.
Just to be sure, even though my sounds aren't in the music folder I tried adjusting the music volume which made no difference, and tried to change the SNDLEVEL in the include which also didn't increase it at all.
That's weird, this should be functionally identical to the method you were using.
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Not currently working on SourceMod plugin development.