This is fairly simple, but useful. You can create an alarm clock with Windows Media Player in scheduled tasks (Task Scheduler) by programming the following into the Task Scheduler:
Step 1: Launch Task Scheduler
Start
Search
Task Scheduler
OR
Start Key +R
Run...
taskschd.msc /s
Step 2...
alarm
audio
computer power
configuration
daily trigger
media player
music files
repeatfunction
scripting
settings
task library
task scheduler
user privileges
volume settings
wake up
windows
windows 7
windows server
xml import