PNG ICO ICNS MORE
Desktop apps
Smooth
Quetto
Library, music
WhiteSmoke
256x256
Music & multimedia
Gakuseisean
File, music
170 dock icons
music, Folder
Blend
music
512x512
File Type icons
128x128
Mixed
iVista 2
Business & finance
Pretty Office Icon Set Part 6
Mac OS X style
Folder, itunes, music
Ose
music, File
Files & folders
Paper Files
paper, guitar, instrument
Network & communications
Oxygen
File, sound, music
disc, music, File
KDE Crystal Diamond
File, mp3, music