MP4 MP3 Converter converts MP4 to MP3 and MP3 to MP4. It is an ALL IN ONE audio converter that supports more than 100 audio and video files, and keeps ID3 tag when converting. The converter also supports batch conversion and is full compatible with Vista and Windows 7. It supports 3GP, 3G2, AAC, AIFF, AVI, CDA, VOB, DVD, FLV, FLAC, MKV, APE, MP3, MPEG, MP2, M4A, M4B, MP4, M4V, OGG, MOV, RA, RM, DAT, WAV, WMA, ASF, WMV, and so on.

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