The audio player and the remote playback functionality only works if:

1. Both coach & student are using headphones in headphone mode
2. The automatic translater of the browser is off
3.  Audioplayer:
The student has to select the desired audio in/outs as standard in the computer sound preferences and then start the browser.The browser takes then the standards automatically from the system.
If you choose a different output device than the standard out in doozzoo pre sessioncheck, the signal of the Audioplayer isgoing to the standard out and not to the selected in doozzoo. - That’s a BUG we have to clean.