A lot of options are available when it comes to Foobar. Hotkey assigning among them.
Basic playback options and controls may be accessed from the upper main menu too
Some nice visualization tools are available: oscilloscope, VU meter, peak meter, etc
The simplistic main interface of Foobar, not fancy, but easy to use
The first time you run this program, a quick appearance setup window allows you the way it displays the loaded playlists/folders/music files