About the antenna - in strong signal areas, plenty of people have mounted the antenna under a bumper with fine reception. Might not work in the boonies, but if you have good signals, you can get away with hiding the antenna.
And about MP3 - who says that the internet is the only place for MP3s??!?!
95% of my MP3 CDs are ripped from my original discs. I get to have 10-15 albums of what I like on ONE disc, and my originals stay safe at home. When the disc gets all fukked up - burn another.
If you want something you don't have - borrow the disc from a friend, rip and burn.
I hate downloading music - you never know what quality you're getting. By ripping your own, you can control the bitrate and get excellent MP3s.
~HH