Exaile do not start in debian testing.
Output:

defcon@localhost ~ $ exaile
/usr/lib/exaile/xl/library.py:17: DeprecationWarning: the md5 module is
deprecated; use hashlib instead
  import md5, os, random, re, threading, time, traceback, gc, sys
GRE_GetGREPathWithProperties failed
Traceback (most recent call last):
  File "/usr/lib/exaile/exaile.py", line 94, in <module>
    from xl.gui import main as exailemain
  File "/usr/lib/exaile/xl/gui/main.py", line 23, in <module>
    from xl import library, logger, media, equalizer, burn, common
  File "/usr/lib/exaile/xl/library.py", line 20, in <module>
    from xl import common, media, db, audioscrobbler, xlmisc, dbusinterface
  File "/usr/lib/exaile/xl/media/__init__.py", line 4, in <module>
    from xl import common, xlmisc
  File "/usr/lib/exaile/xl/xlmisc.py", line 34, in <module>
    from xl import mozembed
  File "/usr/lib/exaile/xl/mozembed.py", line 29, in <module>
    import gtkmozembed
SystemError: dynamic module not initialized properly

Dear submitter,

as the package exaile has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/813255

The version of this package that was in Debian prior to this removal
can still be found using http://snapshot.debian.org/.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Scott Kitterman (the ftpmaster behind the curtain)

I want to close this bug as it is unreproducible with the most recent
version of exaile and no more information could be
acquired.
Feel free to reopen if this still happens for you with more information
so we can hopefully find and fix the issue.