Backtrace when frozen:

(gdb) bt
#0  0x00007f3ae1e6645d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3ae317614c in g_main_context_iterate (priority=2147483647, n_fds=3, fds=0xa79da90, timeout=20, context=0x756000)
    at /build/buildd/glib2.0-2.43.3/./glib/gmain.c:4103
#2  0x00007f3ae317614c in g_main_context_iterate (context=0x756000, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.43.3/./glib/gmain.c:3803
#3  0x00007f3ae31764d2 in g_main_loop_run (loop=0xa7a23c0)
    at /build/buildd/glib2.0-2.43.3/./glib/gmain.c:4002
#4  0x00007f3ae2549545 in gtk_main ()
    at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#5  0x000000000040b09c in  ()
#6  0x00007f3ae1d97ec5 in __libc_start_main (main=
    0x40a490, argc=1, argv=0x7fff76cb86f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff76cb86e8)
    at libc-start.c:287
#7  0x000000000040b4fb in _start ()
(gdb) thread 2
[Switching to thread 2 (Thread 0x7f3ac5580700 (LWP 1821))]
#0  0x00007f3ae3a174fd in nanosleep ()
    at ../sysdeps/unix/syscall-template.S:81
81	../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) bt
#0  0x00007f3ae3a174fd in nanosleep ()
    at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3ae319e1c8 in g_usleep (microseconds=<optimized out>)
    at /build/buildd/glib2.0-2.43.3/./glib/gtimer.c:259
#2  0x0000000000410eaa in _start ()
(gdb) thread 3
[Switching to thread 3 (Thread 0x7f3ab7df8700 (LWP 930))]
#0  0x00007f3ae1e6645d in poll () at ../sysdeps/unix/syscall-template.S:81
81	../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) bt
#0  0x00007f3ae1e6645d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3ad33dc461 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f3ad33cd8e1 in pa_mainloop_poll ()
    at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f3ad33cdf7e in pa_mainloop_iterate ()
    at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f3ad33ce030 in pa_mainloop_run ()
    at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f3ad33dc3f6 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f3ad2f79628 in  ()
    at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-4.0.so
#7  0x00007f3ae3a100a5 in start_thread (arg=0x7f3ab7df8700)
    at pthread_create.c:309
#8  0x00007f3ae1e7090d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
(gdb) thread 4
[Switching to thread 4 (Thread 0x7f3ac5d81700 (LWP 924))]
#0  0x00007f3ae1e6645d in poll () at ../sysdeps/unix/syscall-template.S:81
81	in ../sysdeps/unix/syscall-template.S
(gdb) bt
#0  0x00007f3ae1e6645d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3ae317614c in g_main_context_iterate (priority=2147483647, n_fds=2, fds=0x7f3ac00008c0, timeout=-1, context=0x77b770)
    at /build/buildd/glib2.0-2.43.3/./glib/gmain.c:4103
#2  0x00007f3ae317614c in g_main_context_iterate (context=context@entry=0x77b770, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.43.3/./glib/gmain.c:3803
#3  0x00007f3ae317625c in g_main_context_iteration (context=0x77b770, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.43.3/./glib/gmain.c:3869
#4  0x00007f3ae3176299 in glib_worker_main (data=<optimized out>)
    at /build/buildd/glib2.0-2.43.3/./glib/gmain.c:5614
#5  0x00007f3ae319cb95 in g_thread_proxy (data=0xa7a9f20)
    at /build/buildd/glib2.0-2.43.3/./glib/gthread.c:764
#6  0x00007f3ae3a100a5 in start_thread (arg=0x7f3ac5d81700)
    at pthread_create.c:309
#7  0x00007f3ae1e7090d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
(gdb) thread 5
[Switching to thread 5 (Thread 0x7f3ac747c700 (LWP 923))]
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
185	../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: No such file or directory.
(gdb) bt
#0  0x00007f3ae3a14250 in pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3ad099bb48 in scrobbling_thread ()
    at /usr/lib/x86_64-linux-gnu/audacious/General/scrobbler.so
#2  0x00007f3ae3a100a5 in start_thread (arg=0x7f3ac747c700)
    at pthread_create.c:309
#3  0x00007f3ae1e7090d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
(gdb) thread 6
[Switching to thread 6 (Thread 0x7f3ad19bb700 (LWP 922))]
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
185	in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
(gdb) bt
#0  0x00007f3ae3a14250 in pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000000000041d9cf in _start ()
(gdb) thread 7 
[Switching to thread 7 (Thread 0x7f3ad21bc700 (LWP 921))]
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
185	in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
(gdb) bt
#0  0x00007f3ae3a14250 in pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000000000041d9cf in _start ()
(gdb) thread 8
[Switching to thread 8 (Thread 0x7f3ace1bb700 (LWP 920))]
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
185	in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
(gdb) bt
#0  0x00007f3ae3a14250 in pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000000000040c137 in _start ()
(gdb) thread 9
[Switching to thread 9 (Thread 0x7f3ad3fff700 (LWP 918))]
#0  0x00007f3ae3a17a21 in do_sigwait (sig=0x7f3ad3ffec8c, set=<optimized out>)
    at ../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwait.c:60
60	../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwait.c: No such file or directory.
(gdb) bt
#0  0x00007f3ae3a17a21 in __sigwait (sig=0x7f3ad3ffec8c, set=<optimized out>)
    at ../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwait.c:60
#1  0x00007f3ae3a17a21 in __sigwait (set=0x646240, sig=0x7f3ad3ffec8c)
    at ../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwait.c:97
#2  0x000000000041dba4 in _start ()
(gdb) thread 10
[Switching to thread 10 (Thread 0x7f3ad9e81700 (LWP 917))]
#0  0x00007f3ae1e6645d in poll () at ../sysdeps/unix/syscall-template.S:81
81	../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) bt
#0  0x00007f3ae1e6645d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3ae317614c in g_main_context_iterate (priority=2147483647, n_fds=3, fds=0x7f3ad40010c0, timeout=-1, context=0x75f450)
    at /build/buildd/glib2.0-2.43.3/./glib/gmain.c:4103
#2  0x00007f3ae317614c in g_main_context_iterate (context=0x75f450, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.43.3/./glib/gmain.c:3803
#3  0x00007f3ae31764d2 in g_main_loop_run (loop=0x75f3e0)
    at /build/buildd/glib2.0-2.43.3/./glib/gmain.c:4002
#4  0x00007f3ae3769dd6 in gdbus_shared_thread_func (user_data=0x75f420)
    at /build/buildd/glib2.0-2.43.3/./gio/gdbusprivate.c:273
#5  0x00007f3ae319cb95 in g_thread_proxy (data=0x761450)
    at /build/buildd/glib2.0-2.43.3/./glib/gthread.c:764
#6  0x00007f3ae3a100a5 in start_thread (arg=0x7f3ad9e81700)
    at pthread_create.c:309
#7  0x00007f3ae1e7090d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111