[operat0r]

Having issues with Playback (this thread ) and it was suggested I update.... Naturally that is the first thing I tried but  I have not been able to update in a long time ...
9 (stretch) .

I refuse to use Ubuntu anymore...

 add-apt-repository ppa:team-xbmc/xbmc-nightly
 Official Team Kodi nightly builds.
Less stable than unstable, these are untested automated nightly builds.
 More info: https://launchpad.net/~team-xbmc/+archiv...mc-nightly
Press [ENTER] to continue or ctrl-c to cancel adding it

gpg: keybox '/tmp/tmp49lvc5g6/pubring.gpg' created
gpg: key 6D975C4791E7EE5E: 2 signatures not checked due to missing keys
gpg: /tmp/tmp49lvc5g6/trustdb.gpg: trustdb created
gpg: key 6D975C4791E7EE5E: public key "Launchpad PPA for XBMC for Linux" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg:               imported: 1
gpg: no valid OpenPGP data found.
Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python3.5/threading.py", line 914, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.5/threading.py", line 862, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 688, in addkey_func
    func(**kwargs)
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 386, in add_key
    return apsk.add_ppa_signing_key()
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 273, in add_ppa_signing_key
    cleanup(tmp_keyring_dir)
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 234, in cleanup
    shutil.rmtree(tmp_keyring_dir)
  File "/usr/lib/python3.5/shutil.py", line 480, in rmtree
    _rmtree_safe_fd(fd, path, onerror)
  File "/usr/lib/python3.5/shutil.py", line 438, in _rmtree_safe_fd
    onerror(os.unlink, fullname, sys.exc_info())
  File "/usr/lib/python3.5/shutil.py", line 436, in _rmtree_safe_fd
    os.unlink(name, dir_fd=topfd)
FileNotFoundError: [Errno 2] No such file or directory: 'S.gpg-agent.browser'

[fritsch]

This ppa is not compatible with Debian, it was made for Ubuntu.

As you have plenty of issues with your Debian itself, see other thread, I would think once more about your own decision. Your problems here have zero to do with kodi, but are entirely related to you trying to use Debian...