QTCoffee is a set of command-line Mac OS X utilities for manipulating QuickTime movies and other QuickTime readable media.
Qtractor is an Audio/MIDI multi-track sequencer application written in C++ around the Qt4 toolkit.
Remuco is a duplex remote control system for Linux media players and mobile phones equipped with Bluetooth or WiFi. Remuco can be used with Amarok, Audacious, Banshee, Exaile, MPD, MPlayer, Rhythmbox, Songbird, Totem, TVtime, VLC and XMMS2.
Development in this world is continuously productive, so I'll present only a selection of the Linux sound and music applications and utilities announced in the month of November in the year 2008.