MP3 Player / "weiche"

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hallo,

ich würde gerne .mp3 von einer sd karte / usb stick über aux chinch ein radio weitergeben. ich würde über den arduino quasi die auswahl und abspielen / stoppen steuern. mir ist bewusst das ich vermutlich weitere beschaltung brauche. würde das ganze gerne ohne komplettshields lösen. hat irgendjemand anregungen zu themen wo ich mich einlesen kann falls ein projekt überhaupt möglich ist?

viele grüße

billig mp3 player kaufen (<10€) und die tasten abgreifen.


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