Sentence:  It ignores the sordid financial aspects ( quite conveniently , too , for his <WSD>audience</WSD> , who could indulge in moral indignation without visible , or even conscious , discomfort , their money from the transaction having been put away long ago in a good antiseptic brokerage ) . 
Meaning of the word marked with <WSD> tags:  a gathering of spectators or listeners at a (usually public) performance