emerge mplayer failed

[dpfeifle]

hello,

i tried to install mplayer-0.90_pre6-r2 and got this
compiler error:

ao_mpegpes.c:15: ost/audio.h: No such file or directory

thanks!

regards,
-didi

more details:

gcc -c -O4 -march=i686 -mcpu=i686 -pipe -ffast-math -fomit-frame-pointer -D_REENTRANT -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I. -I.. -I/usr/kde/3.1/include/artsc -I/usr/include/SDL -D_REENTRANT -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -o afmt.o afmt.c
gcc -c -O4 -march=i686 -mcpu=i686 -pipe -ffast-math -fomit-frame-pointer -D_REENTRANT -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I. -I.. -I/usr/kde/3.1/include/artsc -I/usr/include/SDL -D_REENTRANT -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -o audio_out.o audio_out.c
gcc -c -O4 -march=i686 -mcpu=i686 -pipe -ffast-math -fomit-frame-pointer -D_REENTRANT -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I. -I.. -I/usr/kde/3.1/include/artsc -I/usr/include/SDL -D_REENTRANT -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -o ao_mpegpes.o ao_mpegpes.c
ao_mpegpes.c:15: ost/audio.h: No such file or directory
ao_mpegpes.c:16: parse error before `dvb_mixer'
ao_mpegpes.c:16: warning: excess elements in scalar initializer
ao_mpegpes.c:16: warning: (near initialization for `dvb_mixer')
ao_mpegpes.c:16: warning: data definition has no type or storage class
ao_mpegpes.c: In function `control':
ao_mpegpes.c:42: request for member `volume_left' in something not a structure or union
ao_mpegpes.c:43: request for member `volume_right' in something not a structure or union
ao_mpegpes.c:49: request for member `volume_left' in something not a structure or union
ao_mpegpes.c:50: request for member `volume_right' in something not a structure or union
ao_mpegpes.c:51: request for member `volume_left' in something not a structure or union
ao_mpegpes.c:51: request for member `volume_left' in something not a structure or union