22nd October 2015: Sonic Visualiser 2.5 has been released. (i tried reusing the ebuild for version 2.4.1, and it apparently works...)
commit cbceb55776f57e8af53360b62fe55bfd41bd44ce Author: Alexis Ballier <aballier@gentoo.org> Date: Wed Jan 6 11:11:41 2016 +0100 media-sound/sonic-visualiser: bump to 2.5, bug #568674 Package-Manager: portage-2.2.26 Signed-off-by: Alexis Ballier <aballier@gentoo.org> thx!