Fix known errors found from feedback (DBUS problems, pulseaudio start, one vlc example with error. typos)

evaluation_examples/examples/os/28cc3b7e-b194-4bc9-8353-d04c0f4d56d2.json

@@ -23,7 +23,7 @@
     "func": "exact_match",
     "result": {
       "type": "vm_command_line",
-      "command": "pactl list sinks | grep '^[[:space:]]Volume:' | head -n 1 | awk '{print $5}' | sed 's/%//g'",
+      "command": "pulseaudio --start\npactl list sinks | grep '^[[:space:]]Volume:' | head -n 1 | awk '{print $5}' | sed 's/%//g'",
       "shell": true
     },
     "expected": {