If your converted MP3 audio files are excessively bulky, it is usually due to a high bit rate or littered settings for your specific software. In fact, some converters simply do not allow the user the ability to set audio quality or file size, which results in larger files. You can try using Softaken Audio Video Converter to easily set and change things like bitrate, sample rate, and audio quality based on your needs. It can compress larger MP3 files with firm audio clarity. It supports all major audio formats like MP3, WAV, OGG, FLAC, etc., and it is simple to use, fast, and works in batches. This software allows you the freedom to choose your audio's output size and quality, and there is even a free demo available. This application works on all Windows versions, such as 11,10,8,7, XP, and Vista.