As long as we're on this topic, I have an MRS-1044 (no CD) that I don't need anymore, since I no am using the Roland StudioPak have a Zoom RT-323 drum machine.
The unit includes the USB interface, and has the latest operating system and drum kits installed.
Contact me privately if you're interested;
BuleriaChk@aol.com
and maybe both of us can be happy campers...:-)
Best Regards,
Chuck