AAC is short for Advanced Audio Coding and FLAC is the acronym for Free Lossless Audio Codec. The former is a lossy and compressed format and the latter is lossless, which is indicated in the name itself. In order to convert AAC to FLAC, users should consider the Free AAC to FLAC Converter. It is software that can be downloaded by anyone who has a device that runs on Windows OS. The fact that it is very easy to use and can be comprehended by anyone is yet another advantage. It has a simple design and user friendly interface. There are a number of other features which add up to the whole package. It is completely free of cost. Once it has been downloaded, it can be used as long as there is a requirement, without having to pay a penny. The file size of the app is also very small. It requires very less disk space. Since there are no harmful viruses, it is safe as well. The security of the device is not compromised in any way. The Free AAC to FLAC Converter lets users convert a number of AAC files in one go. This is because of the presence of a batch conversion mode. They can add as many files as possible to the list. They can even remove some or all from it at any point in time. The order of conversion can also be set by moving the items up and down the list. Users can customise the audio files with the help of a preview window. They can check the changes made and then save them before starting the conversion. The output folder can also be chosen by the users and the same can be accessed from the interface of the Free AAC to FLAC Converter itself.