When a problem arises, try to break it down into small steps. First to check your cake out... load a wav file, there are plenty of free ones around... does cake play it so you hear it. Next make sure the keyboard is playing. If you are not playing through cake, is audio coming out of the audio out jacks. Next, is the cake sending and the keyboard receiving midi data. Load a prerecorded midi sequence (should be some on the cake cd) and see if it plays the keyboard. If you have a second module or something, test to make sure the keyboard is sending midi data. If all of that is happening, next check to see if the keayboard and cake are set up correctly... cake is recoridng in midi omni mode or set to the channel the keyboard is sending. Make sure the track is armed... the red R is highlighted next to the track. When you record... are midi notes appearing on the track. etc. Hope that helps... if the problem isn't fixed, send another post!!