general improvements in installation

fourier-config.json

@@ -17,5 +17,6 @@
     "user": "fourier",
     "password": "Sup3rDuper!", 
     "database": "fourier"
-  }
+  },
+  "streamURL": "http://monitor.audiovalid.com:8000"
 }

fourier_install.sh

@@ -75,6 +75,7 @@ if [[ "$OSTYPE" == darwin* ]]; then
 	pip install -r $installerpath/requirements.txt
 else
 	curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
+	sudo apt-get install alsa-utils
 	sudo apt-get install -y libudev-dev
 	sudo apt-get install -y tmux
 	sudo apt-get install -y vim