Serial Number for Live lite 9?

Sorry, a 'noob' here, but my friend down the street has Ableton and I liked it, so I just installed the lite version on my computer. Casio fx 115es instructions. Well, I put together this cool thing I was working on, and then when I went to save it, it said I had to authorize it. Suara sirine mobil ambulance mp3 download. Okay, no big deal, so I do that and it asks me for a serial number. Was I supposed to buy the 'lite' version, or did I get a serial number when I downloaded it? Thanks for any help