Congratulations, you have now entered the 'lost years', when ever extra penny, and ever extra moment will be devoted to child, and maybe the many others to come. It will be necessary to 'drop out' of the hobby till the final college payment is made, it happened to me. So don't worry about 'child proof', retire it all to storage. Keep all the media, it never goes out of style. WAF will rein in the many years ahead. Listening to your rig will be considered 'child abuse/neglect'. Have faith, great listen will return, even if the kids move in with you after college, which today is a real possibility.