Fix a typo. Fix some xrefs, comment out references to non-existing man pages.

usr.bin/audio/play/audioplay.1

@@ -1,4 +1,4 @@
-.\"	$NetBSD: audioplay.1,v 1.27 2019/11/09 12:46:44 mrg Exp $
+.\"	$NetBSD: audioplay.1,v 1.28 2019/11/11 11:04:15 wiz Exp $
 .\"
 .\" Copyright (c) 1998, 1999, 2002, 2010, 2019 Matthew R. Green
 .\" All rights reserved.
@@ -176,7 +176,7 @@ web browser as the program to use when playing audio files.
 In addition to the audio driver encodings list in the EXAMPLES section,
 .Nm
 supports playing IEEE floating point data in RIFF WAVE audio files
-(with one caveat that the flaoting point size must be native.)
+(with one caveat that the floating point size must be native.)
 In this case
 .Nm
 converts the floating point data into signed linear samples before
@@ -191,23 +191,20 @@ hardware driver.
 .Sh SEE ALSO
 .Xr audioctl 1 ,
 .Xr audiorecord 1 ,
-.Xr aica 4 ,
 .Xr arcofi 4 ,
 .Xr aria 4 ,
 .Xr audio 4 ,
-.Xr audioamd 4 ,
 .Xr auich 4 ,
 .Xr auixp 4 ,
-.Xr ausoc 4 ,
+.\" .Xr ausoc 4 ,
 .Xr autri 4 ,
 .Xr auvia 4 ,
-.Xr awacs 4 ,
 .Xr bba 4 ,
 .Xr btsco 4 ,
 .Xr clcs 4 ,
 .Xr clct 4 ,
 .Xr cmpci 4 ,
-.Xr dbri 4 ,
+.Xr dreamcast/aica 4 ,
 .Xr eap 4 ,
 .Xr emuxki 4 ,
 .Xr esm 4 ,
@@ -217,29 +214,32 @@ hardware driver.
 .Xr gcscaudio 4 ,
 .Xr gus 4 ,
 .Xr guspnp 4 ,
-.Xr haltwo 4 ,
-.Xr harmony 4 ,
 .Xr hdafg 4 ,
-.Xr mavb 4 ,
+.Xr hppa/harmony 4 ,
+.Xr macppc/awacs 4 ,
+.Xr macppc/snapper 4 ,
 .Xr neo 4 ,
 .Xr pad 4 ,
 .Xr pas 4 ,
-.Xr paud 4 ,
-.Xr repluse 4 ,
+.\" .Xr paud 4 ,
+.\" .Xr repluse 4 ,
 .Xr sb 4 ,
-.Xr snapper 4 ,
+.Xr sgimips/haltwo 4 ,
+.Xr sgimips/mavb 4 ,
+.Xr sparc/audioamd 4 ,
+.Xr sparc/dbri 4 ,
 .Xr sv 4 ,
-.Xr toccata 4 ,
+.\" .Xr toccata 4 ,
 .Xr uaudio 4 ,
-.Xr vaudio 4 ,
-.Xr vcaudio 4 ,
-.Xr vraiu 4 ,
-.Xr vs 4 ,
-.Xr vsaudio 4 ,
+.\" .Xr vaudio 4 ,
+.\" .Xr vcaudio 4 ,
+.\" .Xr vraiu 4 ,
+.\" .Xr vsaudio 4 ,
 .Xr wss 4 ,
+.Xr x68k/vs 4 ,
 .Xr yds 4 ,
-.Xr ym 4 ,
-.Xr zaudio 4
+.Xr ym 4
+.\" .Xr zaudio 4
 .Sh HISTORY
 The
 .Nm