The libraries at the pedagogical universities in China could provide modern information technology education with abundant resources,and they are very active in constructing electronic resources such as audio-visual products and E-journals.

This paper focuses on analyzing and summarizing the process of the specific fields and special situations of audio-visual products and machine-readable materials operate.

Pirated CDs have greatly disrupted the market of digital audio-visual products, and the legal makers and dealers of the products play a very important role in fighting against piracy.