PNG ICO ICNS MORE
Network & communications
Pixel
16x16 Free Application Icons
music, off, sound
Black
16x16
video, no sound, sound
Red
PNG MORE
UI
Windows 8 Pack (Metro Style)
Mute
DarkSlateGray
26x26
Boolean
Mute, speaker, sound
Fugue Icons
Mute, speaker, Control
DarkRed
Computer & hardware
Bitcons
centered, Mute
Goldenrod
64x64
Arrows
Sanscons
Gnome icons
volume, Mute
24x24
Desktop apps
Splashyfish
Mute, volume
Silk
sound, Mute
Gray