How to convert m4s or mpd files into MP4 format! Tutorial on how to create an MP4 file! - YouTube
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Manger Audio - Qoobar 1.6.3: A free tag editor which is designed for editing tags in files of classical music. http://qoobar.sourceforge.net/en/index.htm With Qoobar you can: •Edit ID3v2.4, APE, ASF, MP4 tags, Vorbis
Free WMA to MP3 Converter - Free WMA, WMV to MP3 or WAV converter