How do I need to credit the artist?

You always need to make sure to mention the name of the artist and the name of the track as follow :

Name of the artist — Name of the Track — Provided by Jamendo

This mention does not necessarily need to be made directly in the video. If we are talking about a YouTube video, you can, for example, make it appear in the video description without any problem.

The most important thing is that a viewer who wants to find out the name of the track must be able to access the information easily.