MAGIX Audio Cleanic 3

Hi to all, I’m trying to transform audio cassette contents in .wav files with MAGIX audio cleanic 3. When I click on Record Audio icon of MAGIX it appears the new window ‘Record’. Starting the play back from the AIWA Stereo Casset Deck I can see the volume bar on the left of the window move following the intensity of the signal, but the button ‘Record’ is grayed.
Anyone can help me. Thenk you in advance.