Instructions

1

Learn early on that the MP3 file is, due to its compression, not a high fidelity format. To achieve high fidelity, you must use the raw audio data as it exists on a compact disc. This doesn't mean that MP3 files can't have a high degree of playback quality, only that they will never be considered Hi-Fi.
2

Record your MP3 files at a high bit rate. Generally, the largest bit rate you might use with an MP3 file is 256 KB or 256 KB per second. You should record your MP3 files at the rate of 192 KB since you cannot discern the difference between 192 KB and 256 KB with the naked ear.
3

Utilize a program such as Audacity to manipulate your MP3 file. With Audacity you can reduce white noise and hard-code equalizer settings into the MP3 file. You can also use Audacity to record your MP3 files at a higher bit rate. Each of these changes will improve MP3 playback quality. Audacity is available free from the Audacity website at SourceForge.