Omnifi System Overview: The DMP1 is one part of the Omnifi system, which consists of three pieces:

• The Omnifi DMP1 car digital media player, a compact box that holds music files and connects to your car's audio system;
• The Omnifi DMS1 home digital streamer, which connects to your high-fidelity home stereo receiver. This unit allows you to listen to music files stored in your computer through your home audio system;
• The D-Link DWL-121 wireless receiver, which connects to the DMS1 in your home or the DMP1 in your car, allowing you to receive wireless transmission of audio files from your computer.

Car Digital Media Player: The Omnifi DMP1 car digital media player package includes a compact hard drive housing (which installs in your vehicle), a removable 20-gigabyte hard drive cartridge, SimpleCenter software, and an easy-to-operate dash-mountable controller. The hard drive acts like a CD changer, holding all your digital music files for playback in your vehicle. The DMP1 can be connected to your computer using the supplied USB cable or an optional wireless receiver. You should connect the DMP1's removable hard drive to your computer (via USB 2.0) to download the initial bulk of your library. After the initial download, future updates of the library can all be performed wirelessly.

This requires DMS1 & DWL-121. Please do your research before making your purchase as I do not accept returns on this. Sold in as is condition.