Thanks to the mighty Andrew Back @9600 for the code and inspiration:

http://designspark.com/blog/time-lapse-photography-with-the-raspberry-pi-camera

Copy tlcam to /usr/local/bin
Copy tlcam.sh to /etc/init.d/
ln -s /etc/rc2.d/S99tlcam /etc/init.d/tlcam.sh (or use # insserv tlcam.sh)
Reboot the Pi.

Create the file stills.txt 
$ cd ~/TIMELAPSE
$ ls *.jpg >stills.txt
Stitch the video together using 
$ ./mencoder.sh
Add soundtrack add_soundtrack.sh