DSTunes

DSTunes is an application designed to perform a single task: to help users convert MP3 files to a format which is compatible with Nintendo DSi.
Since this is a portable program, it is important to mention that it doesn’t leave any traces in the Windows Registry. You can copy it on any USB flash drive or other devices, and take it with you whenever you want to convert files on the breeze.
Clearly, the emphasis doesn’t fall upon the look of this program, as you only need to drag and drop the files you want to convert on the icon of the application. Hence, the conversion process seems nothing but a piece of cake.
DSTunes supports batch processing, which means you can add an entire folder to the list and convert the audio files simultaneously.
Once you have dropped the files on the icon, the program automatically converts them. It offers time estimation for completing the job, and at the end of the task it displays a message with the number of converted files and the time needed for carrying out the process.
By default, the program saves the converted files to the same location as the original ones. It keeps the same file name and adds the M4A extension.
All things considered, DSTunes is a simple but powerful software solution that packs a minimalist layout for helping you convert MP3 files to M4A. It offers an excellent conversion speed and does not hamper the system performance. Since there aren’t any configuration settings, it is suitable even for less experienced users.