When this plugin is enabled, XMMS can be commanded by sending strings to $HOME/.xmms/inpipe, for example,

echo play_pause > ~/.xmms/inpipe

will cause XMMS to pause or play.

One can also setup an output pipe, and query XMMS for information. For example, sending 'report title' to the input pipe will cause the current song's title to be printed on the output pipe.