Rio is a Diamond Rio MP3 CLI controller program The home website is http://www.world.co.uk/sba This program supports file uploads and downloads, on both the Classic Rio and the 64 Meg Rio, and supports plug in cards.
The default port is 0x378, if your rio is plugged into a different port, you will need to use the -p option.
This program directly controls various IOports. The program need to be run as root, or setuid root.
If you execute the following line as root after package installation, the program will be setuid root.
chmod 4755 /usr/bin/rio
Do NOT do that unless you understand the security implications of a setuid binary that can "easily" overwrite any system file.