How to change pitch/frequency of sound?

Question

My friend sabotaged my computer and i do not know how to fix this. Almost all the videos or sounds i play in my computer such as movies or mp3 files have a higher pitch that it supposed. Any manual change or free software that i can edit the pitch once and for all? thx

Answer 1

if you have nero burner in installed in your system.. then you can use the nero wave editor to get the results..