media-sound/klick
An advanced command-line based metronome for JACK
USE Flags
debug
Global: Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see http://www.gentoo.org/proj/en/qa/backtraces.xml
osc
Global: Enables support for Open Sound Control
rubberband
Global: Enable support for in-place audio clip pitch-shifting through the rubberband library