Not every MP3 song has the same volume level. At one time, the MP3 song is loud and when comes the next song, the song is too soft that you have to adjust the volume knob to make the song louder. Sometimes, you have adjusted the volume knob to the maximum but you still can hardly hear a thing. I have already mentioned MP3Gain. MP3Gain is a really useful Windows application that allows you to adjust your MP3 songs to have the same volume level, so that you don’t have to reach for the volume knob each time you play different songs.
Vloud is a similar tool as MP3Gain. This free web-based application lets you increase the volume of MP3 or WAV file to make it sound louder than before. Using the web app is extremely easy and straighforward, first choose your preferred preset volume options (light, loud, louder or loudest), next click “Choose File” button to browse for the audio file (max 10 MB) that you want to make it louder. Your MP3/Wav file will be uploaded and processsed by Vloud. The end result will be a louder song. You can listen to the song online and download it to your computer.