UTF-8 is not an actually encoding we can set, see https://www.b1c1l1.com/blog/2011/05/09/using-utf-8-unicode-on-freebsd/. Use en_US.UTF-8 instead, unless there is a better choice.
Created attachment 175168 [details] subsonic-standalone patch
I'm getting approval for this and I'll submit it.
A commit references this bug: Author: jlh Date: Thu Oct 6 16:05:48 UTC 2016 New revision: 423414 URL: https://svnweb.freebsd.org/changeset/ports/423414 Log: Fix encoding issue. PR: 212994 Submitted by: joshruehlig@gmail.com Approved by: pi Changes: head/www/subsonic-standalone/files/subsonic.in
A commit references this bug: Author: jlh Date: Fri Oct 7 17:20:24 UTC 2016 New revision: 423470 URL: https://svnweb.freebsd.org/changeset/ports/423470 Log: Bump PORTREVISION after previous change. PR: 212994 Submitted by: bdrewery Approved by: bdrewery Changes: head/www/subsonic-standalone/Makefile