On Phoebe 3, the preview that occurs when mousing over a media file such as an Ogg Vorbis media file no longer seems to work. nautilus-2.2.1-2 nautilus-media-0.2.1-2 vorbis-tools-1.0-3 xmms-1.2.7-19.p
You need to enable esd. Set /desktop/gnome/sound/enable_esd to True using gconftool or gconf-editor.