Many students buy the workbook new (which includes access to the audio via a code) or second-hand (where the code may be missing or expired). This article explains exactly how to access the audio, what to do if you don't have it, and how to use it effectively for self-study. The legal and most reliable source for the audio is the Oxford University Press (OUP) Student’s Site .
If you are studying English with the Solutions Upper-Intermediate (3rd Edition) coursebook, you already know that the workbook is essential for practicing grammar, vocabulary, and skills. However, the workbook also contains critical listening exercises (often marked with a headphones icon 🎧) that cannot be completed without the accompanying audio tracks. solutions upper intermediate 3rd edition workbook audio