I think you can get replacements, but I would email Novak again. If this thing does not work, the Toy Company should send it to Novak FOR you.
Here are some helpful links for you.
Jacqueline C. Berber
Customer Service Manager
Novak Electronics, Inc.
Customer Service Section :
http://www.teamnovak.com/cs/index.html
Technical information section:
http://www.teamnovak.com/tech_info/index.html
Instruction Manual Section:
http://www.teamnovak.com/download/index.html
Product information Section:
http://www.teamnovak.com/products/index.html