One way to use the downloaded audio is to create a special card for hearing comprehension.

Template editor

Window with tabs reading Forward
Reverse Example at the top. The left of the main area is split in
three parts, Front template, Styling and Back template. The right is
split in two: Front preview and Back preview.
The card template editor for a moderately complex note type.

To get the template editor, start reviewing. Then click the Edit button at the bottom left. In the Edit Current window click Cards…

Adding a hearing comprehension card

Click on the + button at the top right. A new tab appears at the top called Card n (Card 2, …)

Click on that tab. The text in the top left Front Template edit box will be Edit to customize<br> together with the content of the old card, maybe just a {{Front}}, maybe something more complex.

We want the hearing comprehension cards for notes where we have downloaded the pronunciation. We use the method described as Conditional Replacement in the Anki manual.

Replace the whole content of the top left Front Template box, with

{{#Audio}}
Listen.
{{Audio}}
{{/Audio}}

and the content of the bottom left Back Template box with

{{Audio}}
<div>{{Front}}</div>
<div>{{Back}}</div>

Next, to get rid of the generic Card n name, click on the More button at the bottom and select Rename. In the dialog, pick a descriptive name.

The {{#Audio}}/{{/Audio}} pair in the front template means we will only get this card for notes where we have already downloaded something. In this simple case, this pair is not necessary, but when other fields, like an ID, a hint or the front text are added, this becomes necessary. Using it here, too, guards against surprises later.

This example assumes the standard field names. When you see {Unknown field NN} in the boxes on the right, you must change the names to those of your note, as listed in the Edit Current window.