i did publish my little sidplayfp expect gui hack that launches gtk3 and plays sidplayfp from this high voltage S.C. pack
packages: xa, libsidplay, sidplayfp, gtk3, xdotool, expect, xterm, fluxbox keys config (see readme) or kde can too its optional.
thought this could be helpful for enjoyment and/or reference
my scripts are all bundle inside but it can be made clearer and barebone one day to learn from.
but still the music is the fun part is the point
the buttons do feature mnemonics and icon images which
are very good