I have composed a Taishanese resources website including an audio dictionary. Please visit: http://www.stephen-li.com/Taishanese.html Please feel free to contact me.

This is also known as Toy-san, a strictly oral language that only about 3 million people speak. I have also met people who speak the language, including co-workers but since there is no written language and no uniformed pronunciation, I would imagine material would be hard to find.