I'd installed airtime 2.5.2.1 from the source tarball, on Ubuntu 14.04
LTS.   The web-based setup went sensibly.   But I couldn't configure it
to accept a live feed - I would set a "master" username ("source"), a password, port (8004) and
mountpoint (/feedme), and it would listen on port 8004.

But when I tried connecting to that master port with Butt (1.13) or Mixxx, it would
always complain of an authentication error, even though I'd set the user/password via the System -> Streams screen to the same thing that
Butt/Mixxx were using.  And I could see them sending the proper
messages, like
  SOURCE /feedme HTTP/1.0
  Authorization: Basic (followed by the base64 for "source:<the specified password>")
  Content-Type: audio/mpeg
and so on.

When I connect with Mixxx to an Ubuntu 12.04.5 LTS system with Airtime installed from the debian package, with the same stream settings applied (same password, port, etc.), it works fine - Mixxx connects to the Airtime master stream as expected.

But with Airtime installed from source on my 14.04 system, master-harbor authentication always fails:

HTTP/1.0 401 Unauthorized
WWW-Authenticate: Basic realm="Liquidsoap harbor"
Content-Type: text/html


Digging in the code, the airtime-liquidsoap
script contained an incorrect absolute path for liquidsoap_auth.py - it calls it in /usr/lib/airtime/pypo/bin/liquidsoap_scripts/liquidsoap_auth.py, but the source-package install script had put it under
   /usr/local/lib/python2.7/dist-packages/airtime_playout-1.0-py2.7.egg/liquidsoap/liquidsoap_auth.py
instead.

The git-repo copy of Airtime replaces that hardwired path with something that looks promising, the variable auth_path:
        ret = get_process_lines("python #{auth_path} --master #{user} #{password}")
But when I install this version, master-harbor authentication still fails with the same symptoms as before.   I suspect it's still not looking in the right place for liquidsoap_auth.py, but how can I tell?

Other frustrations:

/etc/init.d/airtime-liquidsoap restart doesn't work - it tries to kill the wrong pid, since airtime-liquidsoap seems to routinely exit and (somehow) get restarted, without going through the daemon system.  Even if I directly kill -TERM the airtime-liquidsoap process, something (init?) automagically creates a new process a few seconds later.  It's not being monitored by 'monit' - the install script doesn't set that up.  

There's got to be something better than a reboot whenever I want to test adding a new log message to ls_script.liq.

Another annoyance: the initial apache setup created by the git-repo Airtime "install" script doesn't allow access from anywhere, even localhost.  

But I'm most concerned with getting basic live-stream authentication working reliably.  With that, I can get on the air.

(I'd have been happy to use the pre-packaged Debian version, which installed and ran nicely, except that it only seems to work with Ubuntu 12, which is getting uncomfortably old.)