Coby CA-747 Dual Position CD/MD/MP3 Cassette Adapter Play any portable CD player, MP3 player and MD player through any audio cassette player Fully modular adapter for use with front- and side-loading cassette players Play any audio device with a 3.5mm plug through any car cassette player Perfect for portable CD/MP3 players, DVD, minidisc, or other devices One-year warranty