What are NAS and ESD (EsounD)?
Network Audio System (NAS) is a client-server sound library for X. http://radscan.com/nas.html. To build XEmacs with it, use the `configure’ flag `–with-sound=nas’ (`–enable-sound=nas’ in 21.5 or later). Enlightened Sound Daemon (ESD or EsounD) is yet another sound system. http://www.tux.org/~ricdude/EsounD.html. To build XEmacs with it, use the `configure’ flag `–with-sound=esd’ (`–enable-sound=esd’ in 21.5 or later). You can specify support for both with a flag like `–with-sound=nas,esd’ (`–enable-sound=nas,esd’ in 21.5 or later).