TMCI is an extension for Tcl under windows that allows access to the Media Control Interface (MCI) for Windows. The MCI layer is an abstraction over several types of media (sound and video) both for recording and playback. The current range of MCI drivers allow for handling: TclMCI does not require Tk, but can be configured to display its output in a Tk widget. The library requires the Win32 libraries and should work well with Win32s.