Hello, I also had no audible new mail notification for a long time. However, my Evolution 2.4.2.1 now works. It's linked against libesd0, so it uses esd (the sound server used in GNOME). I don't use neither full GNOME nor full KDE, so I have to start "esd &" before I start evolution. If you try this, be sure to kill all evolution processes before starting esd - if something like /usr/lib/evolution/2.4/evolution-alarm-notify is still running when you start esd, you're likely not to get any sound.
HTH, Viktor.
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