MK2k has released a pretty useful alarm application for the PSP over on QJ's PSP Develoment forums. Called Sleep'n'Wake PSP, this homebrew app lets users doze off to the soothing sounds of their favorite track and wake up to the music of their choice. There's also a beeping alarm sound bundled with the package. here's a list of the available features so far:

* Full cbr/vbr/abr 8kbps-320kbps 44.1kHz MP3 support
* MP3 can be of arbitrary length
* Manage different playlists for Sleep and Wake modes (add/remove mp3s, save/load playlists)
* In Sleep mode you can set a special, more silent volume
* Wake mode is entered at a preset time with volume maxed (you can always adjust the maximum volume with the VOL + and - keys)
* Write yourself a message which will be displayed in Wake mode
* USB Mass Storage can be enabled/disabled within the app

Installation and usage insctructions are in the readme file included in the download. Sleep'n'Wake PSP will run under Firmwares 1.0, 1.5, and 3.xx OE. All other custom firmware have yet to be tested for compatibility.