We can display information about the currenty playing track on the Emacs mode line using the package `emms-mode-line' which is provided by the file emms-mode-line.el.
To activate this feature invoke:
(require 'emms-mode-line)
(emms-mode-line 1)
It is also possible to display the amount of time a track has been playing. This feature is defined in the `emms-playing-time' package which is provided by the file emms-playing-time.el.
To use this feature invoke:
(require 'emms-playing-time)
(emms-playing-time 1)
Note: `(emms-playing-time -1)' will disable emms-playing-time module completely, and is not recommended. (since some other emms modules may rely on it)
Instead, to toggle displaying playing time on mode line, one could call `emms-playing-time-enable-display' and `emms-playing-time-disable-display'."