Why after the update it stopped loading in 320 kbps. There was a default setting.

I have the same and other issues with 4kYoutube to MP3. I suspect that the video files in questioin were not encoded as 320kbps and so the program now defaults to "Best Quality." and lists the real bit rate for those files. whatever that is. Most of my pre-upgrade 320kbps audio files now (post-update) download and extract audio at 192kps, and on burned CDs the audio drops after 3 minutes for files longer than 3 minutes. .As reported perviously, another issue is that audio extracted to AAC format will not load into itunes. It seems to me that the program is becoming less capable with each upgrade.

Hi there!
4K Video Downloader and 4K YouTube to MP3 don't convert files, the apps parse all information provided by the supported sites and then download it.

Thus, as YouTube may not provide audio track in 320 kbps at the moment, 4K Video Downloader and 4K YouTube to MP3 can't download such audio track quality as well.

Unfortunately, we are not able to change, how YouTube provides files for download.