Wow, looks really awesome. Is it free?
No, it's like $100. Crazy, I know. I had my birthday a few days ago(Forgot to mention), and I got like $700 total from my entire family, so I got FL and Photoshop.
Totally worth it.
By the way, there's a DEMO version. You can still use the music normally, but you can't open files(You can save, though).
EDIT: According to the site:
FL Studio 9 Online Boxed
XXL:
$299
$399
Producer Edition
$199
$269
Fruity Loops Edition
$99
$139
Express
$49
-
I actually got XXL(Because I'm not good with my money :P)