GoodOk Audio Converter provides and easy and completed method to convert all popular video and audio files to MP3, AAC, AC3, AMR, M4A, OGG and WAV audio formats. It supports converting all popular video files such as AVI, WMV, MPEG, MP4, ASF, VOB, 3GP, iPhone, MOV, FLV to audio formats, and converting between popular audio formats, such as MP3, AAC, AC3, AMR, M4A, OGG and WAV easily and fast. Convert between popular audio formats including MP3, AAC, AC3, AMR, M4A, OGG and WAV. Convert AVI, WMV, MPEG, MP4, ASF, VOB, 3GP, iPhone, MOV, FLV to MP3, AAC, AC3, AMR, M4A, OGG and WAV audio formats. You just need to click few buttons to finish the conversion task. You can keep the default setting. You can also set the parameters by yourself. Get the output audio formats with super fast speed and most excellent quality.