Many services take only music files of a certain quality, and often have to change this quality to their place there. For example, LastFM accepts only MP3 128 kbps - restrictions affecting Adobe Flash, used in players of this service. It is to encode MP3, we will use large and complex editors? There is an easier way - MP3 Quality Modifier.
The program can "redo" the quality of MP3 - changing its quality, convert stereo modes, joint stereo, mono, dual, to change the frequency, store the results in a separate folder. If the procedure is long, then the settings you can specify the computer off at the end of the operation. When changes are complete MP3 Quality Modifier will give a summary table of the results, which will indicate how to change the size, and can replace the original files with new ones, or remove the source.
During operations on MP3 files The program is able to indicate in tags copyrights, as well as work in a predetermined pattern. Convenient, a portable, freeware.
Download MP3 Quality Modifier: http://www.inspire-soft.net/?nav=soft_mp3qualitymodifier.