GTK 2.x? - программа для клавиатуры

-dev пакет нужен :/

а можно поточнее, какой именно? Я не совсем въехал

Для поточнее нужно название твоего дистра, для дебиана, например, это:

libgtk2.0-dev - Development files for the GTK+ library

Debian Etch. Спасибо, значит я невнимательно искал.

$ apt-cache search multimedia keyboard
hotkeys - A hotkeys daemon for your Internet/multimedia keyboard in X
lineakd - Linux support for Easy Access and Internet Keyboards
xmms-xf86audio - XF86Audio multimedia-key support for XMMS

$ apt-cache show hotkeys
...
Description: A hotkeys daemon for your Internet/multimedia keyboard in X
 This program sits at the back and listens for the "special" hotkeys
 that you won't normally use on your Internet/Multimedia keyboards.
 The buttons perform their intended behaviors, such as volume up and
 down, mute the speaker, launch applications, etc. It has On-screen
 display (OSD) to show the volume, program that's being started, etc.
 .
 It features an XML-based keycode configuration file format, which
 makes it possible to define the hotkeys to launch any programs you
 want.
Tag: interface::daemon, uitoolkit::gtk, x11::application

$ apt-cache show lineakd
...
Description: Linux support for Easy Access and Internet Keyboards
 LinEAK, Linux support for Easy Access and Internet Keyboards, features X11
 support, windowmanager independence, ability to configure all keys through
 GUI or .conf file, volume control and sound controls.
 .
 lineakd is the daemon that runs in the background of an X session and listens
 to incoming events from multimedia buttons.
 .
  Homepage: http://lineak.sourceforge.net
Tag: interface::daemon, role::sw:server

Возможно, и простого xbindkeys хватило бы