[emms-help] Function for sorting by mtime

[Russell Carden]

Hello all,

I like to sort my music by the date when I purchased it when generally 
corresponds to the last modified time.  For this reason, I have been 
hestitant to switch to emms for my music manager.  I learned a little 
lisp and came up with the following function which I have added to my 
emms-playlist-sort.el

(defun emms-playlist-sort-by-mtime ()
  "Sort emms playlist by info-mtime, increasingly."
  (interactive)
  (emms-playlist-sort
   (lambda (a b)
     (time-less-p (append (emms-track-get a 'info-mtime) '(0) )
                  (append (emms-track-get b 'info-mtime) '(0) ))
)))