audio/alsa-lib: improve etc/asound.conf

- Expose "oss" via "aplay -L"
- Simplify "oss" and "pulse"
- Define "sysdefault"

Note, "aplay -D sysdefault" != "aplay -D oss" per ports/184006

audio/alsa-lib/Makefile

@@ -3,6 +3,7 @@
 
 PORTNAME=	alsa-lib
 PORTVERSION=	1.1.1
+PORTREVISION=	1
 CATEGORIES=	audio
 MASTER_SITES=	ftp://ftp.alsa-project.org/pub/lib/ \
 		GENTOO

audio/alsa-lib/files/asound.conf.sample

@@ -1,25 +1,25 @@
 #
 # FreeBSD/OSS
 #
-pcm.!default {
-	type plug
-	slave.pcm.type oss
+pcm.oss {
+	type oss
+	hint.description "Open Sound System"
 }
 
-ctl.!default {
+ctl.oss {
 	type oss
 }
 
+pcm.!sysdefault pcm.plug:oss
+ctl.!sysdefault ctl.oss
+pcm.!default pcm.sysdefault
+ctl.!default ctl.sysdefault
+
 #
 # Pulseaudio
 #
-# pcm.!default {
-# 	type pulse
-# }
-# 
-# ctl.!default {
-# 	type pulse
-# }
+# pcm.!default pcm.pulse
+# ctl.!default ctl.pulse
 
 #
 # Remap all possible surround stuffs.