Why is there no guayadeque in 16.04?

Guayadeque have now gstreamer 1.0 support. See http://github.com/anonbeat/guayadeque. Porting code to wx3.0 is in progress.

Instructions to build from source:

First go to a folder where you have write permissions. In this folder you are going to create a guayadeque folder and compile it from there.

sudo apt-get install git build-essential cmake gettext
sudo apt-get install libwxgtk3.0-dev libtag1-dev libwxsqlite3-3.0-dev libsqlite3-dev 
sudo apt-get install libcurl4-gnutls-dev libdbus-1-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgpod-dev libindicate-dev
cd folder_where_to_create_the_program
git clone https://github.com/anonbeat/guayadeque.git
cd guayadeque
./build
sudo make install

With that you should have it compiled from source and installed.

(Source)

From the publishing history on Launchpad:

Removal requested on 2016-02-05.
Deleted on 2016-02-05 by Steve Langasek
(From Debian) RoQA; dead upstream; depends on gstreamer 0.10; Debian bug #810251

It's a consequence of Debian deciding to remove gstreamer0.10 from their next release:

We shouldn't include GStreamer 0.10 in the next release, and only ship the new 1.x release series. This was also suggested by the security team a while ago.

GStreamer 0.10 is no longer maintained and supported by the upstream project since almost 3 years now, and contains many known bugs that are fixed in the new 1.x release series of GStreamer. Next to many bug fixes, the new release series also contains many other improvements, new features and a more streamlined API.

gstreamer0.10 is still available in Ubuntu 16.04's repositories, presumably because the removal in Debian happened too late in 16.04's development. However, the removal of guayadeque happened early, it was removed from Ubuntu as well.

It is now possible to install Guayadeque on Ubuntu 16.04 from a PPA (private repository) created by the author anonbeat.

In a terminal type:

sudo add-apt-repository ppa:anonbeat/guayadeque
sudo apt-get update
sudo apt-get install guayadeque

For details see: https://launchpad.net/~anonbeat/+archive/ubuntu/guayadeque