Lenco CR-2003 - Manual (Page 24)

You must also know the MAC address of your device (called a
serial number on MediaYou) in order to register this device
under “Personalize Your Internet Radio”.
You can find the AC address of the Internet radio under
Information Center > System information > Wireless Info >
MAC Address.
After registering the device, you must enable this function
under Configuration > Manage my mediaU, so that the
Internet radio can access the media library.
24