On the start screen you see all available players listed. You can start/pause and control the volume for each player already in this overview page. Here it is also possible to sync players, just select the "edit list" icon on the top left corner (the sync icons will appear in the bottom bar). If you want you can also ignore some player, using the arrow-right by each player. The button with the square in it on the left side is the stop button. I don't know why it sometimes only shows a square but sometimes it also shows the typical power-off icon in it.
On the second screen (you can see on which screen you are using the white points on the bottom) you see the current playing song and if available also the cover art. Shuffle/Repeat and seek functions are in the bar on the bottom. By tipping once in the centre of the screen you can hide this bar, typing again and it will re-appear.
On the third screen you see current playlist. When the name of the song is too long for the screen, the App automatically decreases the font size, so that you still can read the whole song name. With the "edit list" button on the top right corner you can modify the list (change the order, remove multiple songs at on time, clear the whole list, or save it as a playlist).
When you go to the media library using e.g. the folder button with the note on the top right corner you see the same function as you also have in the webinterface. Very comfortable is also the search. It searches on the fly (while typing). You can also search the term on Youtube if you have installed the Youtube Plugin, just click on YouTube.
