Amazon.com: Audio Switcher Bi-Directional, avedio links 2 Port 3.5mm Aux Audio Switch Selector Box, 2 Way Audio Sharing Box, Volume Adjustable, One Key Mute for MP3, Speaker, Headphone, PC (1 in 2
MP3 Cutter, MP3 Splitter - trim MP3,split MP3,cut MP3 files to smaller pieces