Send any soundcloud URL to the widget
Send any soundcloud URL to the widget

We may as well send any soundcloud URL to the widget and let it error if invalid, rather than falling back to FilePlayer.
Fixes https://github.com/CookPete/react-player/issues/322
Closes https://github.com/CookPete/react-player/pull/324

CookPete/react-player,CookPete/react-player