How to get music on my iPhone 3GS without iTunes?

I have an iPhone 3GS and the only way I honestly get music is on MewSeek, but I get bored because my phone doesn't get Wi-Fi in the house anymore, but the computer does, I can't download anything on MewSeek without going to get Wi-Fi in school or down the street.So, I wanna know how to get music without iTunes on the WWW (World Wide Web). Please and Thank you.

You don't have to buy music through itunes, just copy them to your computer (mp3, etc) and select into itunes, then sync to your phone… That simple.