gconftool --set /apps/mail-notification/sounds/play-command --type string \ "exec gst-launch-1.0 filesrc location=%file ! decodebin ! audioconvert ! pulsesink >/dev/null 2>&1"
fixed my sound
gconftool --set /apps/mail- notification/ sounds/ play-command --type string \
"exec gst-launch-1.0 filesrc location=%file ! decodebin ! audioconvert ! pulsesink >/dev/null 2>&1"
fixed my sound