You can use the audio recording program of your choice, but you must record your voice over in mono, 44.1 kHz, 16 bit, .wav format, with a volume of around -3db peak or it will not be accepted by our website.
If the audio format is not correct, you will see a red error message that tells you the file you are attempting to upload is in the incorrect format. Many audio programs default to 32-bit .wav files. If you are having trouble uploading, be sure to double-check the bit rate.
Keep in mind that long .wav files can take a while to upload, depending on your Internet connection speed, so be sure to allow yourself plenty of time. Also, be sure the file has finished uploading before clicking the submit button. If you try to click submit before the file has uploaded completely, you will see an error message.