UPDATE: the website mentioned here has now been discontinued. All the songs and materials can now be found on the SGI members website. Every area has a unique login and password, so if you want to access this free content, you need to ask your local leaders for the login details.
Here is a link where you can find the Dedicated Lilac Song. It is an amazing song, really uplifting!
You can download both the lyrics and an mp3 file.
I found the instructions on the page to download the mp3 not to be working on my Mac. The option "Download linked file" doesn't appear when control clicking (or doing the double finger clicking which corresponds to right-click).
"Copy link location" works fine, oddly enough. The file is now safely stored in my iTunes library :)