Display medium title if available

lib/music_library_web/live/collection_live/show.ex

@@ -179,4 +179,12 @@ defmodule MusicLibraryWeb.CollectionLive.Show do
     |> MusicBrainz.Release.medium_duration()
     |> format_duration()
   end
+
+  defp medium_title(medium) do
+    if medium.title !== "" do
+      medium.title
+    else
+      gettext("Disc %{no}", %{no: medium.number})
+    end
+  end
 end

lib/music_library_web/live/collection_live/show.html.heex

@@ -305,7 +305,7 @@
           :if={MusicBrainz.Release.media_count(release_with_tracks) > 1}
           class="text-sm font-semibold"
         >
-          {gettext("Disc %{no}", %{no: medium.number})}
+          {medium_title(medium)}
         </h4>
         <ul class="w-full table table-auto">
           <li