Using Dell Latitude as an alarm clock

I solved it, more or less!  

I found out that Windows Media Player will play music after the laptop has been woken from sleep, but the lid is still closed.  

So I wrote a batch script that plays random music from my music folder, and set it to wake the computer.  

It would still be nice to know why Windows Media Player can do this, but my calendar program can't.  

Here's the batch script that works:

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@echo off
setlocal
setlocal EnableDelayedExpansion
rem store the matching file names in list
cd C:/my/music/directory
dir /b *.wav /s > songlist
rem count the match files
type songlist | find "" /v /c > tmp & set /p _count= rem get a random number between 0 and count-1
set /a _random=%random%*(%_count%)/32768
rem we can't skip 0 lines
if %_random% equ 0 (
for /f "tokens=*" %%i in ('type songlist') do (
set _randomfile=%%i
echo !_randomfile!
goto outofloop
)
) else (
for /f "tokens=* skip=%_random%" %%i in ('type songlist') do (
set _randomfile=%%i
echo !_randomfile!
goto outofloop
)
)
:outofloop
start wmplayer /b %_randomfile%
timeout /T 15 /nobreak
taskkill /IM wmplayer.exe /F
echo !_randomfile! >song

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