"If you have used Winamp over windows, it is akin to
the 'Enqueue in Winamp' option that windows explorer provides for
audio files if you have installed Winamp in your machine and right
clicked over any audio file.
"So first I searched if such a Nautilus plugin was really
already available. To my happiness I found one plugin, written in
python for a similar use but for enqueueing into the playlist of
the Audacious, another music player on Linux. So, I downloaded it,
and after a few minutes of hacking, it was ready for rhythmbox. So
I can't take entire credit for creating this plugin ;-)."