I'm sorry to say, AudioLabel version 4.00 is not fully compatible with Windows 7. AudioLabel version 4.00 was released in 2007, and Windows 7 was released 2 years later. Once Windows 7 was released, AudioLabel was updated to address this issue.
AudioLabel 6.00 is compatible with Windows 7 (and 8) and you can upgrade on our purchase page for $12.95.
Please let me know if you have any other questions.