LinuxBand is a GUI front-end for MMA (Musical MIDI Accompaniment). Type in the chords, choose the groove, and LinuxBand will play a musical accompaniment for you. It’s an open source alternative to Band-in-a-Box featuring: an easy to use graphical interface, an open and well-documented data format, and output to JACK MIDI to facilitate co-operation with other audio applications.
Screencast makes it easy to produce high-quality screencasts on Linux with support for JACK Audio and updates in full detail. It is indispensable for recording video tutorials, video logs, and other computer activity, and works especially well with audio applications such as Pd, Ardour, and chuck. It is multi-threaded and produces smooth results with no jittery sound or loss of fine detail in screen updates.