well, it complains about your username, the one you login regularly, is not a member of the 'audio' group. at least two users are: 'pulse' and 'hannes'.
if 'hannes' is not your current login username, then try adding yourself exactly ast says, as root:
well, it complains about your username, the one you login regularly, is not a member of the 'audio' group. at least two users are: 'pulse' and 'hannes'.
if 'hannes' is not your current login username, then try adding yourself exactly ast says, as root:
usermod -a -G audiousernamebyee