> Snd is free; the code is available via anonymous ftp as snd-18.tar.gz.
The main reason I am interested in it is because I have verified it builds and runs fine without the audiofile library. The library is listed as hard dependency in the snd-17.4 ebuild. Unfortunately it is riddled with known crashing bugs (see #614046) so I don't want to install it. It is possible that the dependency is bogus even in the case of snd-17.4, but given that a new version is available I'm too lazy to check.
bump to 19.8 available, also loses dependency on deprecated gtkglext, blocks 
The bug has been referenced in the following commit(s):
Author: Andreas Sturmlechner <firstname.lastname@example.org>
AuthorDate: 2020-01-19 22:43:59 +0000
Commit: Andreas Sturmlechner <email@example.com>
CommitDate: 2020-01-19 22:45:31 +0000
media-sound/snd: Drop bogus gtkglext dependency
Package-Manager: Portage-2.3.84, Repoman-2.3.20
Signed-off-by: Andreas Sturmlechner <firstname.lastname@example.org>
media-sound/snd/snd-17.4-r1.ebuild | 119 +++++++++++++++++++++++++++++++++++++
1 file changed, 119 insertions(+)
By the way, the current version is 20.1, and it seems to be under a free License (namely Artistic). So bumping all the way could remove the non-free keyword.