There are tags embedded in streams that GStreamer reads.
Let's capture them and print them in the debug log for now, they
could come in handy.
Show bitrate on the song cell
If song is an Ad, let the user know rather than showing an Artist / Album
(We figure that out by checking if the song is longer than 45 seconds
once GStreamer figured out the stream format)

Would be nice to hide album art too.
Log GStreamer tags at the DEBUG level rather than INFO level as there's
just too many of them
Merge pull request #47 from obadz/gst-tags-and-ad-detection

Read Gstreamer tags (for debugging), display bitrate, and detect new ads