Fix audio mode for raw URLs

src/invidious.cr

@@ -470,6 +470,17 @@ get "/watch" do |env|
   thumbnail = "/vi/#{video.id}/maxres.jpg"
 
   if params.raw
+    if params.listen
+      url = audio_streams[0]["url"]
+
+      audio_streams.each do |fmt|
+        pp fmt["bitrate"]
+        pp params.quality.rchop("k")
+        if fmt["bitrate"] == params.quality.rchop("k")
+          url = fmt["url"]
+        end
+      end
+    else
       url = fmt_stream[0]["url"]
 
       fmt_stream.each do |fmt|
@@ -477,6 +488,7 @@ get "/watch" do |env|
           url = fmt["url"]
         end
       end
+    end
 
     next env.redirect url
   end