Can I change the music in the pre-draft lobby?

If you have set up "Team Walk-Up Songs", and turned on "Play team songs while picking / in pre-draft" in the SETTINGS area, the PreDraft will play this music during the presentation.

You can NOT set up different music specifically for this area.

If you desire such a need, one recommended alternative is simply using a 3rd party music player (eg iTunes, Spotify Web Player, etc) and utilizing that by playing music in the background instead.

To learn more about customizing the PreDraft presentation area, see this link.