OK, so you are NOT encoding. Note that to boost the volume you have to re-encode the audio but can leave the video alone. I created a sample encoding profile using mencoder that does just that: re-encodes audio to ac3 with audio boost and leaves the video alone. So do as follows: * Download volume_boost.enc and put it in the kmttg encode folder. * Now start kmttg and enable the "encode" step and choose volume_boost profile. * For existing .mpg files on your computer that you want to amplify volume for go into FILES mode and add the .mpg files you want to amplify audio. Enable "encode" step with volume_boost profile and nothing else, select all the files in the FILES list and then click START JOBS. * For future downloads where you want to apply the audio gain simply enable the "encode" step with volume_boost profile along with the other steps you normally use. NOTE: Files will come out with .boost.mpg extension as defined in the volume_boost.enc file. If you don't like that edit the file and change it to something you want (but don't use just mpg since it can't be same extension as your source files). NOTE: You can also increase or decrease volume by changing volume=15 up or down as desired in the volume_boost.enc file. As bkdtv mentioned use a good editor such as Notepad++ to edit and save these .enc files.