This is possible with shell scripting, but the unzipping process would be advanced. I think it would be about a half day's work to get it setup and debugged, but it would be a great project for you to learn shell scripting.
For example. To move all MP3's from one directory to another cold be a simple script such as:
You could save this as "movefiles.sh"
rename 'y/MP /mp./' *
mv *.mp3 /my/newdirectory
Cron can be told to run it via:
sudo crontab -e
Then entering a line such as:
This basically means run this every 10 minutes of every hour of every day of the month of every month and on all seven of the days of the week.
0,10,20,30,40,50 * * * * /path/to/my/movefiles.sh
See http://www.adminschoice.com/docs/crontab.htm for more information on the format of the crontab file.
Be certain to test your scripts before trying to put them into cron and welcome to bash shell scripting! It is a powerful tool.