[thatworkshop]

This is a very very very plain alarm clock for K5, and any *nix-based device in general. It just adds an entry to crontab. That's it. Until someone has time to do something like geekmaster mentioned in this post, we can use this. I simply don't have time right now.
[Credits go to eureka for this post.

Alright, you can do it in two ways:
A: Use Kindle's builtin media player (benefit: reusing what's already in Kindle! drawback: rings just 10 times which you can change in alarm.sh file)
B. Use mplayer (benefit: rings until you tell it to stop via GUI Launcher. drawback: installing a piece of software you might never use!)

No matter which way you want your alarm clock, go ahead and extract alarmMP3.zip in /mnt/us/

For A:
1. Append the following line to your /etc/crontab/root

00    05        1-31    1-12        0-6     /mnt/us/opt/alarm.sh

2. Extract alarmScript.zip in /mnt/us/
3. Reboot or even better...

Spoiler:

issue killall crond in SSH

For B:
1. Get MPlayer and put in the directory /mnt/us/opt/
2. Append the following line to your /etc/crontab/root

00    05        1-31    1-12        0-6     /mnt/us/opt/mplayer/mplayer -loop 0 -volume 200 /mnt/us/music/alarm.mp3

3. Extract alarmclock.zip into /mnt/us/
4. Reboot or even better...

Spoiler:

issue killall crond and then restart framework in SSH

Spoiler:

This is syntax of crontab entries (from http://www.adminschoice.com/crontab-quick-reference):
* * * * * command to be executed
- - - - -
| | | | |
| | | | +----- day of week (0 - 6) (Sunday=0)
| | | +------- month (1 - 12)
| | +--------- day of month (1 - 31)
| +----------- hour (0 - 23)
+------------- min (0 - 59)