Hi,
Apologies for the ultra delayed response!
The audio player is added using the below code, in both instances:
[audio mp3="URL"][/audio]
When I am logged in, both pages show the default wordpress audio plugin. However when I am logged out, the portfolio page still shows the default wordpress login, and the voices page shows another player completely.
Logged in:
https://postimg.org/image/441lsnmxf/
Logged out:
https://postimg.org/image/6nni0c52r/
Thanks!