Free patch set for MIDI audio synthesis Freepats is a free patch set suitable for MIDI audio synthesis. It is not complete, nor comprehensive yet, and most, if not all patches are in the old and limited GUS patch format. It is, however, the sole DFSG-compliant patch set in existence so far. New patches (including those in better formats, such as SF2 SoundFont banks) are welcome. This is the maemo version, based on the debian package by Henrique de Moraes Holschuh <hmh@debian.org>. The main difference is that the data was moved to /opt and a symbolink link was added, due space limitations on the N900.