1. kenko
  2. getemx


getemx /

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getemx reads the .emx files used by Emusic and downloads the files they describe. Its behavior is controlled by the file ~/.emxdownloader, which contains instructions for file naming, art downloading, etc (see below in Invocation). It downloads files using either wget, curl, or Haskell's interface to libcurl (though I would be surprised if anyone who had libcurl installed didn't also have the curl binary).

Building & Installation

It should be possible to build and install getemx using cabal.


getemx accepts no options on the command line. Its arguments should consist simply of .emx files; the simplest way to invoke it is:

$ getemx *.emx

where the .emx files are in the current directory.

getemx will read a file in your home directory called ".emxdownloader" which can define options to control its behavior. Options may either be boolean or string; the values of boolean options must be one of "f", "t", "false", or "true" while string options may be any string. The syntax of the .emxdownloader file is very simple:

option = value

Any amount of whitespace may occur before or after the "=". The following are boolean options:

  • replace_underscores: if true, underscores in the filename will be replaced by spaces. True by default.
  • replace_apostrophe_identity: if true, the string "'" in filenames will be replaced by "'". True by default.
  • get_art: if true, cover art will be downloaded for each album. True by default.

Currently the only string options control the filenames of the downloaded files. There are two classes here: dldir specifies a directory relative to which further processing will take place, while dlfmt and dlfmt_multidisc specify how to process individual files. The latter two accept a number of replacement options:

Format string: Replaced by:
%(a) Artist name
%(A) Album name
%(n) Track number
%(t) Track name
%(D) Total number of discs in set
%(d) Number of present disc in set (e.g. 2 out of 4)
%(l) Label
%(e) File extension
%(g) Genre
%% %

The defaults for the string options are:

  • dldir: .
  • dlfmt: %(a)/%(A)/%(a) - %(A) - %(n) - %(t)
  • dlfmt_multidisc: %(a)/%(A): %(d)/%(a) - %(A): %(d) - %(n) - %(t)

dlfmt_multidisc is used if a track is being downloaded that belongs to a set with more than one disc; otherwise, dlfmt is used. Note that at present the default for dlfmt_multidisc will probably do the wrong thing on OS X. Note also that neither of the default values ends with %(e): the file extension is supplied automatically if it is not explicitly specified.

A ~/.emxdownloader file that set every option to its default value could look like this:

get_art = t
replace_underscores = t
replace_apostrophe_identity = t
dldir = .
dlfmt = %(a)/%(A)/%(a) - %(A) - %(n) - %(t)
dlfmt_multidisc = %(a)/%(A): %(d)/%(a) - %(A): %(d) - %(n) - %(t)

"Could" because one could also write "true" out in full for "t".