Changing the bitrate of the MP3 files is one the best way to compress / reduce the size of the MP3 audio file. Mp3 Bitrate Changer is a free tool which lets you change the bitrate in order to compress the size of the MP3 files.
Since, reducing the bitrate degrades the quality of the MP3 file, so make sure that you do not reduce it to way lower values. It supports all Mp3 bitrates specified in MPEG-1 Layer 3 Standard: 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256 and 320 kbit/s.
It is very fast program and is very user friendly which lets you reduce the bitrate of any MP3 without much of technicalities and complexities.
You may try use Avdshare Audio Converter to convert MP3 bitrate step by step guide and also help to change other audio format bitrate or video format bitrate.
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