Audition CS6 suddenly won't play music

[Keith22460134j0mf]

Suddenly hitting space bar highlights curson on wave file and locks the program. I have backed windows 10 up to a few days earlier, un-installed and re-installed Audition, re-staarted several times and updated Qdobe and Windows 10. Still no joy. I can edit files and so on but no play or record. Help please

[SteveG_AudioMasters_]

You need to reconnect your sound device - that's the only thing that stops the transport working.