Problems with the pitch of your recording will be due to the soundcard and Audition not agreeing about sample rate. Make sure the Tapco is set to the same sample rate as Audition is recording in. If either is set differently then it will record OK but the saved file will have the incorrect info about the sample rate when opened and played back by another device or software.
This makes sense. I will check that. Is the sample rate set in 'Preferences' in Audition?
If I use ASIO4ALL, how do I change sample rate?
Thanks.