GNU Sound logs me out of GNOME

Try and start gnusound from the terminal and see if you can catch any helpful output before you're kicked out of GNOME.
Also, you may want to look at ~/.xsession-errors.

Hi Dave, I tried starting gnusound from the terminal and this is what I got:

sample_init:642: Using plain C minmax
module_init:218: collecting modules in path modules
module_init:220: expansion 0: modules
module_init:218: collecting modules in path ~/.gnusound/modules
module_init:220: expansion 0: /home/michael/.gnusound/modules
module_init:218: collecting modules in path /usr/lib/gnusound/modules
module_init:220: expansion 0: /usr/lib/gnusound/modules
file_register_driver:127: registered AudioFile
FAIL : src/module.c:module_load:113: no manifest in /usr/lib/gnusound/modules/file_ffmpeg.so
FAIL : src/module.c:module_load:113: no manifest in /usr/lib/gnusound/modules/file_flac.so
FAIL : src/module.c:module_load:113: no manifest in /usr/lib/gnusound/modules/file_gmerlin_avdec.so
FAIL : src/module.c:module_load:113: no manifest in /usr/lib/gnusound/modules/file_lame.so
file_register_driver:127: registered sndfile
ladspa_init:1420: collecting GLADSPA plugins in path /usr/lib/ladspa/
player_register_driver:1373: registered player driver ALSA
player_register_driver:1373: registered player driver JACK
player_register_driver:1373: registered player driver OSS
player_register_driver:1373: registered player driver Dummy
player_init:1402: initializing audio driver OSS
dialog_init:138: creating dialog preferencesdialog

(gnusound.real:3269): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated

(gnusound.real:3269): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated

(gnusound.real:3269): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated

(gnusound.real:3269): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated

(gnusound.real:3269): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated
mixer_buffers_alloc:894: mixer buffers allocated: muxbuf: 65536 bytes@0x87983e0, srcbufs: 2048 bytes (* 32)

(gnusound.real:3269): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated

(gnusound.real:3269): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated
*** buffer overflow detected ***: /usr/bin/gnusound.real terminated
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x48)[0x5f3ed8]
/lib/tls/i686/cmov/libc.so.6[0x5f2f10]
/lib/tls/i686/cmov/libc.so.6[0x5f2869]
/lib/tls/i686/cmov/libc.so.6(__snprintf_chk+0x34)[0x5f2754]
/usr/bin/gnusound.real(draw_mixer_sliders+0x303)[0x806ff73]
/usr/bin/gnusound.real(draw_mixercanvas+0xbf)[0x807099f]
/usr/bin/gnusound.real(view_mixercanvas_expose_event+0x22)[0x8090492]
/usr/lib/libgtk-x11-2.0.so.0[0x965474]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x1b2)[0x69d072]
/usr/lib/libgobject-2.0.so.0[0x6b27a8]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x648)[0x6b39b8]
/usr/lib/libgobject-2.0.so.0(g_signal_emit+0x26)[0x6b3fb6]
/usr/lib/libgtk-x11-2.0.so.0[0xa8195e]
/usr/lib/libgtk-x11-2.0.so.0(gtk_main_do_event+0x500)[0x95f190]
/usr/lib/libgdk-x11-2.0.so.0[0x150204]
/usr/lib/libgdk-x11-2.0.so.0[0x1501b3]
/usr/lib/libgdk-x11-2.0.so.0[0x173...