Community
Banshee is maintained by Aaron Bockover, Andres G. Aragoneses, Alexander Kojevnikov, Bertrand Lorentz, and Gabriel Burt. Over 155 developers, 130 translators, 6 artists, and countless users and volunteers have contributed to Banshee.
The project was started by Aaron in early 2005. It is strongly affiliated with GNOME, using its infrastructure for Git hosting, issue tracking, mailing lists, and IRC.
Publicity
Many journals and magazines have reviewed Banshee, and its developers have spoken at several conferences. View the full list of reviews and talks.
Technical Summary
Banshee is written in C# (using the Mono platform on Linux and OS X), using GNOME technologies (Gtk#, GStreamer, etc), and SQLite. It is free/open source software, released under the MIT/X11 license.