In short: 128 kbps MP3 files will be smaller in size, remove more of the higher frequencies (>16 kHz) and have slightly more audible compression artifacts. Music has to be ripped at 320 kbps to be heard properly played back at 320 kbps You can not improve a 128kbps file by converting it. Your converting rubbish. Bit Rate (Mono/Stereo) pop-up menus: MP3 bit rates are available between 32 kbps and 320 kbps, but default to 80 kbps mono, and 160 kbps stereo.
2 days ago . There are many applications that can convert your files to a 320 kbps MP3 format. In addition, make sure the Sample