How to change the pitch of audio and music in Audacity in 2 ways

You can change the pitch of audio in Audacity using the "Effect" menu, which contains dozens of different tools for editing ...
Ars Technica

Built-in sound is giving a constant high pitch beep!! Any ideas?

I am using 2 different soundcards. My Fortissimo for day use, and my built-in sound for night use W/ear phones. With the built in sound, i can use it fine, and after about 5 minutes, it starts this ...