I have created a plugin for exaile which fetches album cover from douban.com

You can download the plugin archive from:
http://bitbucket.org/sunng/exailedoubancovers/downloads/

To install it, open exaile, click menu edit >> preference >> plugins, hit button “install plugin file”, select “doubancovers.tgz”(if you cannot find the file, just change filter to “all files”)

In some cases, the plugin could not be shown in the list at once, you can close the preference dialog and open it again, then active it.

To get album art, right click the album art icon, select “fetch cover” and wait for right cover downloaded.

The plugin is open sourced under GPL v2, you can grab the code from bitbucket using mercurial:
hg clone http://bitbucket.org/sunng/exailedoubancovers/

Some screenshots for you: