so i'm pretty old school when it comes to electronics. but for my birthday i was given $125 gift card for walmart that i have no idea what to spend it on. so ive been looking at mp3 players...but i'm clueless about them. the big question is if it would even be something i would use. i listen to music mostly in my car because i installed a decent system in it. can i hook up an mp3 player to my car stereo? and ive heard something about podcasts..what are they like? do they cost anything? and my last question..what else can you do with mp3 players besides listen to music? thanks!