Virtue has released an app that makes your PSP into a very expensive Alarm Clock, heres the info from the readme:
--- How To Use: ---
Uset the cursor to edit the alarm settings to your desired time. Set the hours, minutes, and seconds.
Once you have your time set, press Start to Start the alarm.
--- v0.5 Includes: ---
Standard Alarm Clock System
Custom Alarm
--- Using Custom Alarm: ---
Simply put your .wav into the sounds folder, and name it alarm1.wav
--- Future Verions Will Include: ---
More Custom Alarms
Stop Watch Feature
Graphical Layout
Anything Else I See Fit
Download via the comments (until a page is made)