The black pixels which were copied to the right part of the volume slider
when the volume was decreased actually included a one-pixel-wide line of the
bright red indicating max volume.
Since development on XMMS ended long ago (last release was in 2007), we have
switched support to MPRIS (Media Player Remote Interfacing Specification),
an API for controlling *any* media player which supports it. We use the
playerctl C library, available from https://github.com/acrisci/playerctl.
Because of the switch, several more XMMS-specific features have been removed.
In particular,
* The channels are no longer displayed, and the volume is always displayed.
* The bitrate is no longer displayed, and the title is always displayed.
* The eject feature no longer is functional, although the eject button is
still present.
* Toggling between the various XMMS windows is no longer supported.