! ! Attention: You need read access to /dev/io to get in/out-port ! privileges. So xtuner is intended to run as root only! ! Xtuner was developed to enable Linux and FreeBSD users to control Reveal's RA300 PC Radio Card and the AIMS Lab RadioTrack FM tuner card under Xwindows. It implements most all the features found with the software included from the manufacturer including presets, volume control, fine tuning, and timed auto on/off as well as tone control for bass and treble.