MediaPlayer Polish.
- Finished logic for Media Source Button.
- Added icons for different media sources, Wi-Fi one still needs a better one.
- Adjusted track title, the bigger font it had was making the title label useless,
  reduced the font size and adjusted title helper bounds. Works much better and
  opening tracks with long chinese names doesn't break the media player component
  layout since I added a maximum width that the title can take.