Sony MZ-N707 Net MD Walkman Player/Recorder (Black) MP3, WMA, and WAV audio-format compatibility; selectable data compression (ATRAC/ATRAC3) USB port allows 32x music data transfer from PC; Ultimate Skip-Free G-Protection guards against skips during active use Optical digital-audio input, stereo analog line input (.125-inch minijack), microphone input Aluminum upper lid, 1-line dot-matrix LCD, stick-type LCD remote control with editing functions OpenMG Jukebox Version 2.2 offers Windows XP capability, title editing; includes car kit and tons of other accessories