You can browse the svn repository online at this new url. Note: the old www.seul.org cvs url no longer works.
You can also make a checkout with this subversion command1.
svn co svn://seul.org/svn/pygame/trunk pygame
You can find development binaries at "The Spectacularly Adequate Automated Pygame Build Page". After every svn checkin, Mac and Windows binaries are built, tested, and then uploaded.
Additionally, you can find pre-release binaries for Python 2.7 on Windows and Stackless Python 3.1 on Windows at http://www3.telus.net/len_l/pygame.
A feed is available for changes to svn: from launchpad mirror of svn.
1 To get pgreloaded (Pygame Reloaded, Pygame 2)
svn co svn://seul.org/svn/pygame/branches/pgreloaded