I tried to play some gaming audio files through Modizer and pressed the infinity symbol so that they play indefinitely. Unfortunately, what happens is that within 10 seconds of starting the file, it goes back to the beginning. So far, I've discovered this issue occurs with brstm, dsp, and hps files.
Also, have you considered a version of lazyUSF based on the foobar2000 plugin? The one you currently use makes the files for Donkey Kong 64 play at a lower speed. Foobar2000 does not have this issue.
Lastly, would you add support for .brstmspm? This is an extension used by music files from the Wii game Super Paper Mario. The files are basically .brstm files that are renamed to keep the music at the correct speed.