Musical Note, Radio, Speaker, Mixer and Headphone.
Included in the main file:
.psd 1024×1024 .psd files is layered psd with raster elements, shadow can be hidden with layer visibility toggle.
.png 96×96, 128×128, 256×256, 512×512, 1024×1024
.ico 96×96, 128×128, 256×256 and a single bundled .ico file with three sizes 96×96, 128×18 and 256×256 in single .ico file
.png, .icns and .ico files have Shadow and No Shadow version.