Message: 3
Date: Wed, 26 Apr 2017 16:52:14 +0200
From: Ralf Mardorf <ralf.mardorf@alice-dsl.net>

If you insisted in receiving digest, then log in, at the bottom of
http://lists.linuxaudio.org/listinfo/linux-audio-user "Unsubscribe or
edit options".

By the 3. option in the grey area, "Get MIME or Plain Text Digests?",
switch from "Plain Text" to "MIME".