Just want to add that wherever you see this icon you can send all the songs from that page to the player.
So all battle (hall of fame) pages, every bodies 'playlist' and every bodies 'songs' (from your 'music' page) can all be sent to the player.

I love spending an evening listening to all of JBPs songs or Takas masterpieces , one after the other straight from their uploaded music pages.

[edit] icon is much smaller at the top of bA pages.