emms queue track next on a 'simple playlist' mode

good morning everybody i hope you gonna have a wonderful week ahead can
somebody explain to me please what is the name of the function that will
put the directory of choise (insert folder tree or whatever it called)
but not in the end of playlist, but after the currently playing track, i
guess in winamp and foobar this called queue. and thank you!
-- 
Aleksas Tunikas
http://www.aleksas.ru