LinuxQuestions.org - flash problem i think

if i start up amarok and then open firefox and try to watch a video or something firefox closes i think its a flash sharing problem and if it is how do i fix it? i downloaded Pulseaudio cuase i read that it supposed to fix my problem but if this isn't whats wrong please tell. so when i configure it it tells me this
Code:
checking for a BSD-compatible install... /usr/bin/install -c

checking whether build environment is sane... yes

checking for a thread-safe mkdir -p... /bin/mkdir -p

checking for gawk... gawk

checking whether make sets $(MAKE)... yes

checking build system type... i686-pc-linux-gnu

checking host system type... i686-pc-linux-gnu

checking for a thread-safe mkdir -p... /bin/mkdir -p

checking for gcc... gcc

checking for C compiler default output file name... a.out

checking whether the C compiler works... yes

checking whether we are cross compiling... no

checking for suffix of executables...

checking for suffix of object files... o

checking whether we are using the GNU C compiler... yes

checking whether gcc accepts -g... yes

checking for gcc option to accept ISO C89... none needed

checking for style of include used by make... GNU

checking dependency style of gcc... gcc3

checking whether gcc and cc understand -c and -o together... yes

checking how to run the C preprocessor... gcc -E

checking for grep that handles long lines and -e... /bin/grep

checking for egrep... /bin/grep -E

checking whether gcc needs -traditional... no

checking for m4... /usr/bin/m4

checking whether gcc accepts -std=gnu99... yes

checking whether gcc accepts -Wall... yes

checking whether gcc accepts -W... yes

checking whether gcc accepts -Wextra... yes

checking whether gcc accepts -pedantic... yes

checking whether gcc accepts -pipe... yes

checking whether gcc accepts -Wformat... yes

checking whether gcc accepts -Wold-style-definition... yes

checking whether gcc accepts -Wdeclaration-after-statement... yes

checking whether gcc accepts -Wfloat-equal... yes

checking whether gcc accepts -Wmissing-declarations... yes

checking whether gcc accepts -Wmissing-prototypes... yes

checking whether gcc accepts -Wstrict-prototypes... yes

checking whether gcc accepts -Wredundant-decls... yes

checking whether gcc accepts -Wmissing-noreturn... yes

checking whether gcc accepts -Wshadow... yes

checking whether gcc accepts -Wendif-labels... yes

checking whether gcc accepts -Wpointer-arith... yes

checking whether gcc accepts -Wcast-align... yes

checking whether gcc accepts -Wwrite-strings... yes

checking whether gcc accepts -Winline... yes

checking whether gcc accepts -Wno-unused-parameter... yes

checking whether gcc accepts -ffast-math... yes

checking target operating system... linux

checking whether gcc knows __sync_bool_compare_and_swap()... no

checking architecture for native atomic operations... unknown

checking whether gcc knows __thread... yes

checking whether gcc knows _Bool... yes

checking for lt_dlinit in -lltdl... no

checking for a sed that does not truncate output... /bin/sed

checking for ld used by gcc... /usr/bin/ld

checking if the linker (/usr/bin/ld) is GNU ld... yes

checking for /usr/bin/ld option to reload object files... -r

checking for BSD-compatible nm... /usr/bin/nm -B

checking whether ln -s works... yes

checking how to recognize dependent libraries... pass_all

checking for ANSI C header files... yes

checking for sys/types.h... yes

checking for sys/stat.h... yes

checking for stdlib.h... yes

checking for string.h... yes

checking for memory.h... yes

checking for strings.h... yes

checking for inttypes.h... yes

checking for stdint.h... yes

checking for unistd.h... yes

checking dlfcn.h usability... yes

checking dlfcn.h presence... yes

checking for dlfcn.h... yes

checking for g++... g++

checking whether we are using the GNU C++ compiler... yes

checking whether g++ accepts -g... yes

checking dependency style of g++... gcc3

checking how to run the C++ preprocessor... g++ -E

checking for g77... no

checking for xlf... no

checking for f77... no

checking for frt... no

checking for pgf77... no

checking for cf77... no

checking for fort77... no

checking for fl32... no

checking for af77... no

checking for xlf90... no

checking for f90... no

checking for pgf90... no

checking for pghpf... no

checking for epcf90... no

checking for gfortran... no

checking for g95... no

checking for xlf95... no

checking for f95... no

checking for fort... no

checking for ifort... no

checking for ifc... no

checking for efc... no

checking for pgf95... no

checking for lf95... no

checking for ftn... no

checking whether we are using the GNU Fortran 77 compiler... no

checking whether  accepts -g... no

checking the maximum length of command line arguments... 98304

checking command to parse /usr/bin/nm -B output from gcc object... ok

checking for objdir... .libs

checking for ar... ar

checking for ranlib... ranlib

checking for strip... strip

checking if gcc supports -fno-rtti -fno-exceptions... no

checking for gcc option to produce PIC... -fPIC

checking if gcc PIC flag -fPIC works... yes

checking if gcc static flag -static works... no

checking if gcc supports -c -o file.o... yes

checking whether the gcc linker (/usr/bin/ld) supports shared libraries... yes

checking whether -lc should be explicitly linked in... no

checking dynamic linker characteristics... GNU/Linux ld.so

checking how to hardcode library paths into programs... immediate

checking whether stripping libraries is possible... yes

checking for shl_load... no

checking for shl_load in -ldld... no

checking for dlopen... no

checking for dlopen in -ldl... yes

checking whether a program can dlopen itself... yes

checking whether a statically linked program can dlopen itself... yes

checking if libtool supports shared libraries... yes

checking whether to build shared libraries... yes

checking whether to build static libraries... yes

configure: creating libtool

appending configuration tag "CXX" to libtool

checking for ld used by g++... /usr/bin/ld

checking if the linker (/usr/bin/ld) is GNU ld... yes

checking whether the g++ linker (/usr/bin/ld) supports shared libraries... yes

checking for g++ option to produce PIC... -fPIC

checking if g++ PIC flag -fPIC works... yes

checking if g++ static flag -static works... no

checking if g++ supports -c -o file.o... yes

checking whether the g++ linker (/usr/bin/ld) supports shared libraries... yes

checking dynamic linker characteristics... GNU/Linux ld.so

checking how to hardcode library paths into programs... immediate

appending configuration tag "F77" to libtool

checking for lt_dlmutex_register... no

checking for struct lt_user_dlloader... no

checking for lt_dladvise... no

checking for ANSI C header files... (cached) yes

checking arpa/inet.h usability... yes

checking arpa/inet.h presence... yes

checking for arpa/inet.h... yes

checking glob.h usability... yes

checking glob.h presence... yes

checking for glob.h... yes

checking grp.h usability... yes

checking grp.h presence... yes

checking for grp.h... yes

checking netdb.h usability... yes

checking netdb.h presence... yes

checking for netdb.h... yes

checking netinet/in.h usability... yes

checking netinet/in.h presence... yes

checking for netinet/in.h... yes

checking netinet/in_systm.h usability... yes

checking netinet/in_systm.h presence... yes

checking for netinet/in_systm.h... yes

checking netinet/tcp.h usability... yes

checking netinet/tcp.h presence... yes

checking for netinet/tcp.h... yes

checking poll.h usability... yes

checking poll.h presence... yes

checking for poll.h... yes

checking pwd.h usability... yes

checking pwd.h presence... yes

checking for pwd.h... yes

checking sched.h usability... yes

checking sched.h presence... yes

checking for sched.h... yes

checking sys/mman.h usability... yes

checking sys/mman.h presence... yes

checking for sys/mman.h... yes

checking sys/resource.h usability... yes

checking sys/resource.h presence... yes

checking for sys/resource.h... yes

checking sys/select.h usability... yes

checking sys/select.h presence... yes

checking for sys/select.h... yes

checking sys/socket.h usability... yes

checking sys/socket.h presence... yes

checking for sys/socket.h... yes

checking sys/wait.h usability... yes

checking sys/wait.h presence... yes

checking for sys/wait.h... yes

checking syslog.h usability... yes

checking syslog.h presence... yes

checking for syslog.h... yes

checking sys/dl.h usability... no

checking sys/dl.h presence... no

checking for sys/dl.h... no

checking for dlfcn.h... (cached) yes

checking linux/sockios.h usability... yes

checking linux/sockios.h presence... yes

checking for linux/sockios.h... yes

checking for netinet/ip.h... yes

checking regex.h usability... yes

checking regex.h presence... yes

checking for regex.h... yes

checking sys/un.h usability... yes

checking sys/un.h presence... yes

checking for sys/un.h... yes

checking linux/input.h usability... yes

checking linux/input.h presence... yes

checking for linux/input.h... yes

checking sys/prctl.h usability... yes

checking sys/prctl.h presence... yes

checking for sys/prctl.h... yes

checking sys/filio.h usability... no

checking sys/filio.h presence... no

checking for sys/filio.h... no

checking windows.h usability... no

checking windows.h presence... no

checking for windows.h... no

checking winsock2.h usability... no

checking winsock2.h presence... no

checking for winsock2.h... no

checking ws2tcpip.h usability... no

checking ws2tcpip.h presence... no

checking for ws2tcpip.h... no

checking sys/ioctl.h usability... yes

checking sys/ioctl.h presence... yes

checking for sys/ioctl.h... yes

checking byteswap.h usability... yes

checking byteswap.h presence... yes

checking for byteswap.h... yes

checking sys/syscall.h usability... yes

checking sys/syscall.h presence... yes

checking for sys/syscall.h... yes

checking for an ANSI C-conforming const... yes

checking whether byte ordering is bigendian... no

checking for pid_t... yes

checking for size_t... yes

checking for ssize_t... yes

checking for off_t... yes

checking return type of signal handlers... void

checking for uid_t in sys/types.h... yes

checking for SIGXCPU in signal.h... yes

checking for INADDR_NONE in netinet/in.h... yes

checking for the pthreads library -lpthreads... no

checking whether pthreads work without any flags... no

checking whether pthreads work with -Kthread... no

checking whether pthreads work with -kthread... no

checking for the pthreads library -llthread... no

checking whether pthreads work with -pthread... yes

checking for joinable pthread attribute... PTHREAD_CREATE_JOINABLE

checking if more special flags are required for pthreads... no

checking whether to check for GCC pthread/shared inconsistencies... yes

checking whether -pthread is sufficient with -shared... yes

checking for library containing pow... -lm

checking for library containing sched_setscheduler... none required

checking for library containing dlopen... -ldl

checking for library containing shm_open... -lrt

checking for library containing inet_ntop... none required

checking for library containing timer_create... none required

checking for library containing connect... none required

checking for getopt_long... yes

checking for lrintf... yes

checking for strtof... yes

checking vfork.h usability... no

checking vfork.h presence... no

checking for vfork.h... no

checking for fork... yes

checking for vfork... yes

checking for working fork... yes

checking for working vfork... (cached) yes

checking type of array argument to getgroups... gid_t

checking for getgroups... yes

checking for working getgroups... yes

checking for sys/select.h... (cached) yes

checking for sys/socket.h... (cached) yes

checking types of arguments for select... int,fd_set *,struct timeval *

checking for chmod... yes

checking for chown... yes

checking for clock_gettime... yes

checking for getaddrinfo... yes

checking for getgrgid_r... yes

checking for getpwuid_r... yes

checking for gettimeofday... yes

checking for getuid... yes

checking for inet_ntop... yes

checking for inet_pton... yes

checking for mlock... yes

checking for nanosleep... yes

checking for pipe... yes

checking for posix_fadvise... yes

checking for posix_madvise... yes

checking for posix_memalign... yes

checking for setpgid... yes

checking for setsid... yes

checking for shm_open... yes

checking for sigaction... yes

checking for sleep... yes

checking for sysconf... yes

checking for mkfifo... yes

checking for readlink... yes

checking for ctime_r... yes

checking for usleep... yes

checking for strerror_r... yes

checking for lstat... yes

checking for setresuid... yes

checking for setresgid... yes

checking for setreuid... yes

checking for setregid... yes

checking for seteuid... yes

checking for setegid... yes

checking for ppoll... yes

checking for strsignal... yes

checking for sig2str... no

checking for strtof_l... yes

checking for PTHREAD_PRIO_INHERIT... yes

checking for special C compiler options needed for large files... no

checking for _FILE_OFFSET_BITS value needed for large files... 64

checking for open64... yes

checking for ld used by GCC... /usr/bin/ld

checking if the linker (/usr/bin/ld) is GNU ld... yes

checking for shared library run path origin... done

checking for iconv... yes

checking for working iconv... yes

checking for iconv declaration...

        extern size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);

checking for X... libraries , headers

checking for gethostbyname... yes

checking for connect... yes

checking for remove... yes

checking for shmat... yes

checking for IceConnectionNumber in -lICE... yes

checking for library containing cap_init... no

checking sys/capability.h usability... no

checking sys/capability.h presence... no

checking for sys/capability.h... no

checking for pkg-config... yes

checking for pkg-config... /usr/bin/pkg-config

checking pkg-config is at least version 0.9.0... yes

checking for LIBSNDFILE... configure: error: Package requirements ( sndfile >= 1.0.10 ) were not met:



No package 'sndfile' found



Consider adjusting the PKG_CONFIG_PATH environment variable if you

installed software in a non-standard prefix.



Alternatively, you may set the environment variables LIBSNDFILE_CFLAGS

and LIBSNDFILE_LIBS to avoid the need to call pkg-config.

See the pkg-config man page for more details.
any help?

Thanks