These are some icons I've made in 3D for some programs, because I disliked the one provided as default or because I wanted a high-res version. They are, from left to right:

- Ardour: A multichannel digital audio workstation that comes with ubuntu studio.
- Jack: A sound server also included in that distro.
- Qsynth: A fluidsynth GUI front-end application. Fluidsynth is software synthesiser based on the Soundfont specification.
- VirtualBox: A general-purpose full virtualizer for x86 hardware.

These icons are free to use, released under the GPL license.