IBM PCjr Software
Posted: Sat Aug 17, 2013 4:30 pm
old-games.com charges for downloads (!?), and the IBM BBS links are dead because IBM took away the archives (mirror here) but otherwise a nice list of free resources.
A nearly-complete (if not actually complete) list of all games that support tandy/PCjr audio is at mobygames for both bootable games and DOS.