Free playback control software for windows

Global Audio Control - control your audio and Winamp player through keyboard shortcuts Global Audio Control application was designed to be a simple but useful tool to control your audio and Winamp player through keyboard shortcuts.
Main features:
Volume control
- Choose to control various audio devices such as Wave/DirectSound and MIDI.
Controlling Winamp
- Choose to control any of Winamps playback commands such as play, pause, and stop.
On Screen Display
- The On Screen Display offers a visual reference to your current audio levels.
Command-Line Options
- Allows the user to pass information to GAC. View this document for more information.
Multiple Sound Card support
- Use the command-line option "-show sound devices" to view the available sound devices in your system and "-use sound device: (device number)" to select it.
Skinning the OSD
- The OSD can be skinned only if it has been enabled. To load a skin simply double-click the file, select it from the configuration window, or right-click on the System Tray icon and point to the Skins menu. The newly skinned OSD will display itself on success.