Help Music in car

I have a Chevy malibu 07 without an aux plug but I want to play my music from my EVO in it with pretty good sound quality without buying a new stero? Any suggestions
 
i just bought the jabra adapter from sprint for my husband who has the evo also and it's amazing - it connects thru the phone's bluetooth and plays music, becomes a hands free phone, speaks the texts and you can even respond with texts with your voice, it's very cool and is all wireless and comes with a phone charger for only $150....we love it!
 
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