EarTrumpet - Volume Control for Windows
BitMidi - 🎹 The wayback machine for old-school MIDI files
Sound Control - App-specific volume control
VGMusic - Video Game MIDI Music from NES, SNES, N64, GameCube, Gameboy, and others.
Power mixer - Power Mixer is a complete Windows volume control replacement.
Sonos In-Wall Speaker - A speaker made by Sonos and Sonance that sits in your wall