Updated monochrome and votify

Dockerfile

@@ -15,8 +15,10 @@ RUN curl -L -o /tmp/bento4.zip https://www.bok.net/Bento4/binaries/Bento4-SDK-1-
     && chmod +x /usr/local/bin/mp4decrypt \
     && rm -rf /tmp/bento4 /tmp/bento4.zip
 
-# Install votify-fix
-RUN pip install --no-cache-dir websocket-client git+https://github.com/GladistonXD/votify-fix.git
+# Install votify (official, glomatico). The [librespot] extra is required for the
+# default --session-type librespot.
+RUN pip install --no-cache-dir websocket-client \
+    "votify[librespot] @ git+https://github.com/glomatico/votify.git"
 
 # Install web app dependencies
 COPY requirements.txt /app/requirements.txt