[Hoary] Rhythmbox cannot play music

[Mary Gardiner]

Hi,

I have a latest-Hoary system, upgraded from a Warty install. I am trying
to play OGG files with Rhythmbox and I get this error when I press Play:

    Failed to write data to the esound daemon

Here's my sound card:
0000:00:1f.5 Multimedia audio controller: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03)

Appropriate ALSA modules seem to be loaded:
snd_intel8x0           32352  1
snd_ac97_codec         74144  1 snd_intel8x0
snd_pcm_oss            52132  0
snd_mixer_oss          19680  2 snd_pcm_oss
snd_pcm                94696  3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_timer              25060  1 snd_pcm
snd                    55012  6 snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore              10016  2 snd
snd_page_alloc          9732  2 snd_intel8x0,snd_pcm

The polypaudio daemon is running as user "mary":

$ ps aux | grep polypaudio
mary     12670  0.0  0.6   4668  3212 ?        S    08:09   0:00 /usr/bin/polypaudio

The gstreamer-properties dialog says that my "Default Sink" for audio is
the "ESD - Enlightenment Sound Daemon".

As best I understand it, these settings combined should allow rhythmbox
to play sound through the polypaudio daemon. What have I missed?

-Mary