okei, thank Ishiyoshi for quick reply, i downloaded and install flow : 1. install Sony PCLK USB Driver for XP for cmt-c7nt pc recognize sound card usb 2. install netmd driver, i very happy. windows xp recognize netmd cmt-c7nt when i press button on netmd and plug usb conected pc and netmd cmt-c7nt. 3. unplug usb netmd and install openmg 1.2 and update openmg 2.2 , and retart computer, but when i conect ubs netmd to pc and run openmg 2.2 , openmg said not found external media, netmd not present on openmg i try install mcrew 2.01E but not use netmd cmt-c7nt on openmg why ?, can you help me ! thanks