Updated website information.

Optimised and improved the app performance based on user feedback.

Updated to work better with Dark Mode.

Updated to avoid bug for iOS 13.1

- New songs, now 25 recordings!
- Now, selecting a new song doesn't reset 'Play All' or 'Random'.

Bug fix

Updated features:
- Choose play all to play songs in order.
- Choose random to play songs in random order.

New explanation page.

Added 'Play All' option.
Fixed bugs and updated the appearance.