I can compile and install nas, but a closer look shows me following
output on the end:

...
install.man in doc/man/lib done
make[3]: Leaving directory `/usr/pkgsrc/audio/nas/work/nas-1.8/doc/man/lib'
make[2]: Leaving directory `/usr/pkgsrc/audio/nas/work/nas-1.8/doc/man'
make[1]: Leaving directory `/usr/pkgsrc/audio/nas/work/nas-1.8/doc'
installing man pages in ./config...
make[1]: Entering directory `/usr/pkgsrc/audio/nas/work/nas-1.8/config'
install.man in config done
make[1]: Leaving directory `/usr/pkgsrc/audio/nas/work/nas-1.8/config'
=> Automatic manual page handling
===========================================================================

Installing files needed by nas-1.8nb1:

        /usr/pkg/etc/nas/nasd.conf
            [/usr/pkg/share/examples/nas/nasd.conf.eg]

===========================================================================
pkg_create: can't stat `/usr/pkg/bin/auconvert'
pkg_create: can't stat `/usr/pkg/bin/auctl'
pkg_create: can't stat `/usr/pkg/bin/audemo'
pkg_create: can't stat `/usr/pkg/bin/audial'
pkg_create: can't stat `/usr/pkg/bin/auedit'
pkg_create: can't stat `/usr/pkg/bin/auinfo'
pkg_create: can't stat `/usr/pkg/bin/aupanel'
pkg_create: can't stat `/usr/pkg/bin/auphone'
pkg_create: can't stat `/usr/pkg/bin/auplay'
pkg_create: can't stat `/usr/pkg/bin/aurecord'
pkg_create: can't stat `/usr/pkg/bin/auscope'
pkg_create: can't stat `/usr/pkg/bin/autool'
pkg_create: can't stat `/usr/pkg/bin/auwave'
pkg_create: can't stat `/usr/pkg/bin/checkmail'
pkg_create: can't stat `/usr/pkg/bin/issndfile'
pkg_create: can't stat `/usr/pkg/bin/playbucket'
pkg_create: can't stat `/usr/pkg/bin/soundtoh'
pkg_create: can't stat `/usr/pkg/include/audio/8svx.h'
pkg_create: can't stat `/usr/pkg/include/audio/Afuncproto.h'
pkg_create: can't stat `/usr/pkg/include/audio/Afuncs.h'
pkg_create: can't stat `/usr/pkg/include/audio/Alibint.h'
pkg_create: can't stat `/usr/pkg/include/audio/Alibnet.h'
pkg_create: can't stat `/usr/pkg/include/audio/Amd.h'
pkg_create: can't stat `/usr/pkg/include/audio/Aos.h'
pkg_create: can't stat `/usr/pkg/include/audio/Aosdefs.h'
pkg_create: can't stat `/usr/pkg/include/audio/Aproto.h'
pkg_create: can't stat `/usr/pkg/include/audio/Astreams.h'
pkg_create: can't stat `/usr/pkg/include/audio/Xtutil.h'
pkg_create: can't stat `/usr/pkg/include/audio/aiff.h'
pkg_create: can't stat `/usr/pkg/include/audio/audio.h'
pkg_create: can't stat `/usr/pkg/include/audio/audiolib.h'
pkg_create: can't stat `/usr/pkg/include/audio/audioutil.h'
pkg_create: can't stat `/usr/pkg/include/audio/fileutil.h'
pkg_create: can't stat `/usr/pkg/include/audio/mutex.h'
pkg_create: can't stat `/usr/pkg/include/audio/release.h'
pkg_create: can't stat `/usr/pkg/include/audio/snd.h'
pkg_create: can't stat `/usr/pkg/include/audio/sound.h'
pkg_create: can't stat `/usr/pkg/include/audio/soundlib.h'
pkg_create: can't stat `/usr/pkg/include/audio/voc.h'
pkg_create: can't stat `/usr/pkg/include/audio/wave.h'
pkg_create: can't stat `/usr/pkg/lib/X11/AuErrorDB'
pkg_create: can't stat `/usr/pkg/lib/libaudio.a'
pkg_create: can't stat `/usr/pkg/lib/libaudio.so'
pkg_create: can't stat `/usr/pkg/lib/libaudio.so.2'
pkg_create: can't stat `/usr/pkg/lib/libaudio.so.2.4'
pkg_create: can't stat `/usr/pkg/man/cat1/auconvert.0'
pkg_create: can't stat `/usr/pkg/man/cat1/auctl.0'
pkg_create: can't stat `/usr/pkg/man/cat1/audemo.0'
pkg_create: can't stat `/usr/pkg/man/cat1/audial.0'
...
=> Registering installation for nas-1.8nb1
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/auconvert' is in +CONTENTS
but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/auctl' is in +CONTENTS but
not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/audemo' is in +CONTENTS but
not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/audial' is in +CONTENTS but
not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/auedit' is in +CONTENTS but
not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/auinfo' is in +CONTENTS but
not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/aupanel' is in +CONTENTS but
not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/auphone' is in +CONTENTS but
not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/auplay' is in +CONTENTS but
not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/aurecord' is in +CONTENTS
but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/auscope' is in +CONTENTS but
not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/autool' is in +CONTENTS but
not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/auwave' is in +CONTENTS but
not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/checkmail' is in +CONTENTS
but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/issndfile' is in +CONTENTS
but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/playbucket' is in +CONTENTS
but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/bin/soundtoh' is in +CONTENTS
but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/8svx.h' is in
+CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/Afuncproto.h' is
in +CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/Afuncs.h' is in
+CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/Alibint.h' is in
+CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/Alibnet.h' is in
+CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/Amd.h' is in
+CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/Aos.h' is in
+CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/Aosdefs.h' is in
+CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/Aproto.h' is in
+CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/Astreams.h' is in
+CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/Xtutil.h' is in
+CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/aiff.h' is in
+CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/audio.h' is in
+CONTENTS but not on filesystem!
pkg_admin: nas-1.8nb1: File `/usr/pkg/include/audio/audiolib.h' is in
+CONTENTS but not on filesystem!
...
nas-1.8nb1 requires installed package p5-perl-headers-3.99.21nb3
nas-1.8nb1 requires installed package perl-5.8.8nb2
`/usr/pkgsrc/audio/nas/work/.DDIR' is up to date.
===> Cleaning for nas-1.8nb1
root@lfs:/usr/pkgsrc/audio/nas #


A lot of files are really missing.

Since nas isn't installing the audio files correctly, everything that
depends on it is also broken (SDL for example).

Any Ideas ?

Fix ? Yes, please.

Cheers, Zafer.