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1442 mp3 audio circuit board products are offered for sale by suppliers on Alibaba.com, of which mp3 players accounts for 27%, other ics accounts for 23%, and pcba accounts for 4%. A wide variety of mp3 audio circuit board options are available to you, such as wav, wma and flac.You can also choose from voic recorder, e-book reading and game mp3 audio circuit board,as well as from black, blue, and red mp3 audio circuit board, and whether mp3 audio circuit board is clip, clip mp3, or headphone.