For all the fun of being a teenager, most people wouldn't ask to be 17 again -- you can't buy smokes or go into p**n stores, and what good is being Zac Efron if you're only going to bang Leslie Mann? For a 17 year old who turned his cherubic free time into a sick music site, check out Vye.
From an Australian kid named Charlie, Vye's a free music discovery portal powered by the tech behind YouTube and Last.fm, letting people seamlessly stream millions of tunes & videos, learn more about particular artists, and get recommendations based on their taste, all via a super-slick, intuitive interface he built in just three months, which is like infinity in I Can't Legally Drink years. Listening can be kickstarted by browsing genres or directly searching for an artist/album/track, with results linking to a page featuring the artist's Wikipedia bio, a playable listing of their top tracks, links to similar artists, and a tiled breakdown of their entire catalog, all easily streamed, so no need for any Flo(Rida)max. You can also enable artist radio channels, automated streams of their tunes mixed in with those of similar artists (w/ Pandora-esque thumbs-up/-down functionality), and, if avail, music vids'll play simultaneously in an expandable thumbnail, something even being a guitarist doesn't make any less creepy.
Sharers can sign up for an acct and hand off favorite playlists and tracks via Twitter, Facebook, or even MySpace, the use of which even being a teenager doesn't excuse.