Audio devices: a scan button needed

Hi there, once Jamy is running on my PC (Win7 64 pro) its resisting to accept any other audio devices, than those which were active, when it started.If I, In exmaple, use my headest and I only use it when I need it, th efollowing procedure has to take place: I first have to kill Jami in the task manager, then switch on the headset and then start jami again, so it recognises the now available headset. Thats not really very user friendly, isn’t it?