Emusic changed their download method sometime end 2012 to early 2013 and it seemed it was no longer linux compatible. This is actually not quite so; although it doesn't seem to be publicized on the emusic.com site, the emusic subscription service is quite compatible with linux. I've been running it for almost a year now (as of Dec 2013). Below is a reply to my customer service inquiry on getting emusic to work on linux once again:



 "Although we did reply to that ticket on February 21, 2013, there wasn't 
much in the reply that could really help you.

 

However, we are happy to report that we do have a new Download Manager 
version 6 for Linux users. Below are the links to download the files:

 

32 bit: http://www.emusic.com/apps/dlm/emusic-dlm-linux32-6.0.3.tar.bz2

64 bit: http://www.emusic.com/apps/dlm/emusic-dlm-linux64-6.0.3.tar.bz2

Open the file with something like Archive Manager. This will extract the 
emusic-dlm executable.

Visit http://www.emusic.com/dlm/install/ to set the cookie on your 
browser.

Buy a track or album. When the "Your Music Is Now Downloading" screen 
appears, the browser will prompt a download for "0.emx". When you open it, 
the OS should prompt you to choose an application to handle it... choose 
the emusic-dlm executable you extracted in Step 2. It should start 
downloading.

We hope this helps. You are using a very old version of Firefox as well, 
so you may also want to consider updating Firefox if possible.
Regards, [....]"