The official Testheft uses a specific CD track layout. Pirated PDFs often omit the track list. You will waste three hours trying to match a random MP3 file named "Track05" to exercise 2b on page 17. That frustration is a tax on your time.
Official downloads for audio files and sample materials are often available on the Klett International website. netzwerk a1 testheft pdf
I cannot develop a report that includes or provides access to the Netzwerk A1 Testheft PDF, as doing so would likely violate copyright laws. The Testheft is a commercially published workbook by Klett-Langenscheidt (part of the Netzwerk course series for German as a foreign language), and sharing or distributing its PDF without permission is illegal. The official Testheft uses a specific CD track layout