I know that Answers.com will answer questions at the best of times, but when you ask a question like how do you use a complex plugin based music and digital audio workstation software, you will be directed to where you can find all the documentation on every aspect of such a program.
Here is my response... go to the FL Studio website at Image Line, Google FL Studio tutorials or download the demo and read the online manual that explains how to use everything. In short, RTFM. Google that too.
Fl Studio 10
The tubbylife uses the program FL Studio 10.
He uses FL Studio 10.
The only legal way of downloading it is by buying it of the FL Studio Website. Or you can pirate it at your own risk. Hope I answered your question :)
You can buy it directly from the FL Studio website or most music stores.
Tristam uses FL Studio 10. It's not just for making dubstep.
Steinberg's Quadrafuzz plugin is discontinued and no longer available. If you can find an old copy of it, installing it in to the system would allow you to use it as a VST plugin inside FL Studio automatically.
FL Studio
He uses both
No, .flp save files are opened in FL Studio only, you can however load up FL Studio and use it as a VST within another sequencer of your choice, so you could use FL Studio as a VST within Cubase for example and then load up your .flp project file with all the playback going into Cubase.
No, the boxed version comes with 1900 extra sounds, a sample CD and a $49.00 virtual cash card for products on the FL Studio website. The downloaded version, however, offers free lifetime upgrades (free upgrade to FL Studio 10, 11, 12.....)
Using Rewire, you can host Fl Studio inside Studio one.