Do not use cheap earbuds. Use with noise isolation. The test center will have slight background noise (coughs, papers shuffling). Train with a fan blowing in your room. If you can crack listening with a fan noise, the silent exam hall is a dream.
For best results, reviewers recommend pairing the listening volume with speaking practice to develop a balanced proficiency. Availability:
Watch out for "corrections" in the audio (e.g., "I'll see you at 5—no, wait, let’s make it 6")—the second piece of info is usually the answer.