It seems that you're not a member of the 'audio' group. Would you please try the following?
Go to System->Manage->Users and groups->Manage groups
Select 'audio' and press Edit.
Now add yourself to the group and log out and back in. What happens if you try to use your device now?
It seems that you're not a member of the 'audio' group. Would you please try the following? >Manage- >Users and groups->Manage groups
Go to System-
Select 'audio' and press Edit.
Now add yourself to the group and log out and back in. What happens if you try to use your device now?