Hi, I have signed up to receive my invitation to Spotify Free, and am awaiting its arrival. What's the con to using the free version besides getting hit with Ads? Is it a free trial or is there some sort of cap to the amount of music I can listen to? I don't want to put the music anywhere, I just want to listen to tracks when I am on my notebook, and don't mind listening to Ads really if I'd have to pay at least $5/month not to. Will I be capped (in terms of music time) or only have x number of days to use this application? How does the free version work? Thanks.