Contains a combo box where you can set at what bit depth should be created the wave file. You can choose standard 16bit wave file, or two types of 32bit wave output (provides more precise editing in wave editors that support 32 bit wave files, however it's likely that you would not be able to play the file in an audio player). 32bit float (0.24) is the native format of FL Studio'mixer engine, while 32bit float (16.

is the native format of Adobe AuditionĀ® (also known as Cool EditĀ®).
CD format: If you want to create audio files compatible with CD format use 44.1 kHz, 16-bit WAV files. Check that the Mixer sample-rate is set to 44.1 kHz in the Audio Settings window. Also note that FL Studio does not burn to CD format, it creates audio files ready for burning. Use any 3rd party CD burning program to create the audio CD.