To change your currency in Wix Music:
Go to Music Library in your site's dashboard.
Hover over the relevant single/album/playlist and click the More Actions
icon.
Click Edit.
Click the drop-down under Select a currency for this playlist.
Select a currency.
Click Save.
Notes:
For playlists, the currency refers to the tracks inside it as you cannot sell the playlist as a whole.
You can set different currencies for each album, single or playlist, but you cannot set different currencies within each of them.
This article is credited to the Wix team - https://support.wix.com/ and we thank them for that!