Ogg/Vorbis is not always detected in the OpenAL configure
script. If you are running Mandrake7.2, you can enable Vorbis support
by following these directions.

cd to the Chromium directory:

> ./configure --enable-vorbis
> make support
> cd ./support/openal/linux

Open up "config.h" in your favorite editor, go to the end of the 
file, and add this line:

#define VORBIS_SUPPORT 1

Then:

> make
> cp -f ./src/libopenal.a ../lib
> cd ../../../
> make chromium

Chromium B.S.U. should now have been built with Ogg/Vorbis support. To
verify:

> cd ./bin
> ./chromium-setup 

Click on the "Enable PlayList" checkbox, click on the "Music PlayList" 
tab, then click the "OpenAL" button in the lower right corner. If 
"*.ogg;*.OGG" is in the "Supported file types" box, you're good to go.