Audacity
If this is the first time you hear this program Vanma then you have to try it, it is characterized by professionalism, as well as the simplicity of use, the professional as well as for amateur use, but also if you are a fan of the work of podcasting, the program Audacity is the best choice for you about the experience, the program resides in severalMac versions for Windows as well as Linux, the most beautiful it's free and constantly updated
