audio/splay/Makefile has:

LIBS+=		-lossaudio

This is not needed with Linux.

patch-ab for mpegsound/mpegsound.h assumes <machine/endian.h> is available
for Linux (and others).

patch-ae for mpegsound/mpegtoraw.cc assumes <soundcard.h> is available for
Linux (and FreeBSD).

I have fixed these patches in my own pkgsrc. And splay works fine under
Linux (i386 architecture).

But before I share a complete patch for splay, can anyone let me know what
operating systems you use splay under, so I can know what to check before
adding LIBS+=-lossaudio ? (Or should I just check for NetBSD or !Linux?)

Thank you,

   Jeremy C. Reed
   http://bsd.reedmedia.net/