Radiotray does not start on a vanilla 16.04

[HugoHirsch]

Coming from a working 14.04 radiotray I did a vanilla installation of 16.04 and
apt install radiotray, that brought in

$ apt-cache policy radiotray
radiotray:
  Installed: 0.7.3-5ubuntu1
  Candidate: 0.7.3-5ubuntu1
  Version table:
 *** 0.7.3-5ubuntu1 500
        500 http://de.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
        500 http://de.archive.ubuntu.com/ubuntu xenial/universe i386 Packages
        100 /var/lib/dpkg/status

Whenever I launch radiotray nothing happens but the console shows:
$ radiotray
/usr/lib/python2.7/dist-packages/radiotray/XmlDataProvider.py:23: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import Gtk
Traceback (most recent call last):
  File "/usr/bin/radiotray", line 12, in <module>
    os.chdir(workdir)
OSError: [Errno 2] No such file or directory: '/usr/bin/src'

Is that a packaging problem? Do I need to install multiple versions of python to make this app run again?

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: radiotray 0.7.3-5ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Aug 9 21:26:28 2016
InstallationDate: Installed on 2016-08-02 (7 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
SourcePackage: radiotray
UpgradeStatus: No upgrade log present (probably fresh install)

[HugoHirsch (ubuntubugs-aiki-it)]

Thanks, installing python-xdg worked like a charm.