No playback on my CSB Audio Bible. It says: "This media is not yet supported."
Welcome to the forums Lodewyk.
The CSB audio Bible has been the subject of discussion in the the Logos 8 forum lately. Not sure exactly how it impacts that web app but here is a response from Faithlife that you may find helpful.
http://community.logos.com/forums/p/187329/1082772.aspx#1082772
Thanks so much, Bruce!