We have an old workstation connected to our PBX that suffices as our music on hold media player.  During the month of December, this Windows XP box plays music from a holiday play list.  Here’s a little batch file that utilizes PowerShell and Windows Media Player play lists to automate this task.

Logon Script

@ECHO OFF
IF "%date:~-10,2%" == "12" GOTO DECEMBER
IF NOT "%date:~-10,2%" == "12" GOTO GENERAL
  ECEMBER
%SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe C:\December.ps1
GOTO END
:GENERAL
%SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe C:\General.ps1
GOTO END
:END

General.ps1

$WMP = New-object  –COM WMPlayer.OCX
$WMP = new-object –COM WMPLAYER.OCX
$Media = $WMP.mediacollection
$strplaylist = "General"
$WMP = new-object –COM WMPLAYER.OCX
$Media = $WMP.mediacollection
$Playlist = $media.getbyname($strplaylist)
$a = $Playlist.item(0)
$WMP.openplayer($a.sourceurl)

December.ps1

$WMP = New-object  –COM WMPlayer.OCX
$WMP = new-object –COM WMPLAYER.OCX
$Media = $WMP.mediacollection
$strplaylist = "December"
$WMP = new-object –COM WMPLAYER.OCX
$Media = $WMP.mediacollection
$Playlist = $media.getbyname($strplaylist)
$a = $Playlist.item(0)
$WMP.openplayer($a.sourceurl)

I put each of the scripts in the root of C.  Then I simply configured the server to reboot every night at midnight and auto-logon.  When the computer reboots, it logs in, runs the login script, checks the current month and then loads the appropriate playlist.