Is it a way to put DeadBeef to sound menu instead of Rhythmbox?
First install deadbeef - you should check the authors launchpad website for precompiled versions of deadbeef. At the time of writing this, no 12.10 or later version was available:
add deadbeef to sound indicator
add volume control options
To add the volume controls you need to compile from the MPRIS plugin from source.
important note - this was highly unstable for me on 64bit ubuntu causing deadbeef to continually crash and I dont recommend you do so.
sudo apt-get install deadbeef-plugins-dev git
Next download the mpris plugin source from github
git clone https://github.com/kernelhcy/DeaDBeeF-MPRIS-plugin.git cd DeaDBeeF-MPRIS-plugin ./autogen.sh ./configure make sudo make install
If you want to remove Rhythmbox from the sound indicator then the linked Q&A will help