I have made a Python script. The script is used in the program XBMC. This script is starting the MPlayer. d:\mplayer.exe -slave -input file=MplayerCmdPipe.txt <http:address> I want to use the file MplayerCmdPipe.txt as a FIFO/Pipe, writing commands to this file from the script. When I do so nothing happens at run time, only the first time the MPlayer is started and a command is in the MplayerCmdPipe.txt file . Please tell me how to use FIFO/Pipe file and use it to communicate with the MPlayer at the run time. My OP is Windows Vista and the version of MPlayer is "MPlayer-rtm-svn-2985" Best regards Petter G