Hello abduljamilch - Welcome to the Sony Forums

I cannot see an option in the menu that will reduce the recording volume, however this is something that can be done in the majority of video editing software packages - both paid for and free of charge. Windows Movie Maker (if you have a Windows PC) may even already be installed but if it isn't, it can be downloaded from here:

http://windows.microsoft.com/en-US/windows-live/movie-maker-get-started

There are various other options available online which are free of charge - in all of them replacing the background audio with stock music is pretty straightforward.

Thanks,

Simon

Hello again

The only possible explanation that I can think of is that this feature wasn't included due to it being relatively easy to do nowadays with various bits of free software. Having said that, I am aware of other models that allow you to adjust the recording volume right down to zero.

Thanks,

Simon