A relatively new European company – Tonicum, has unveiled their miniature DJ mixer – The Pacemaker that comes with 120GB of internal storage and can be run with either Windows or Mac.
The device is also equipped with a crossfader, multifunction touchpad for adjusting bend and pitch. The Pacemaker is also capable of recording files directly to your PC's hard-drive. It's even equipped with dual 3.5mm stereo jacks (Line in and Line out) and a standard USB 2.0 slot. The Pacemaker also has a crossfader for the headphones and is also equipped with an equalizer and inbuilt sound FX. The acceptable formats are MP3, WMA, AAC, OGG Vorbis, and WAV amongst a few others.
Price and availability has not yet been disclosed, but suffice to say, lets hope to see it around soon.
LINE IN...i don't think that is included as you listed. Check the screenshots of the device :/ 
