Hi and thank your for your question.
I think the answer you are looking for will be found in an application named "Goldwave".
You can download it here and using the trial you can perform this emergency task for free.
If I have answered your question to your satisfaction please choose "Accept" and Thank You.
(Pardon this posting - it was made in error owing to a system bug.)
Hi,Would you like to send me the file on here and I will convert it for you.
Hi there I am another Expert. Why are needing to do this please because if you halve the highest frequency then the sound quality will be greatly reduced?
Hello could your problem with Audacity be the bottom Blog entry by Andrew in this Blog?
Thankyou. You're on the right track because Audacity seems to be the best way to accomplish this!
Am standing by
Hello there are you using a Mac or PC please?
If you are using a Mac please try this programme