We’ve featured Free MIDI to MP3 Converter recently, but the sound quality of the file converted by it is very poor. Although MIDI format is supported by most media players like WinAMP, AIMP, VLC, KMPlayer, etc, most free media converters do not support it.
You can let Winamp to convert wav format to mp3 format with the Nullsoft Disk Writer plugin, but oddly it does not work with MIDI format, and the same problem happens to VLC media player. Most of the multimedia converters we’ve reviewed before does not support MIDI format, for instance, XMedia Recode, Media Cope, Pazera Free Audio Extractor, etc.
But FormatFactory is an exception, it’s claimed to be a free multimedia converter that allows to convert all video and audio formats to MP4/AVI/WMV/MPG/3GP/FLV/SWF format, and convert all media formats to MP3/AMR/WAV/WMA/AAC/OGG format. FormatFactory allows to convert batches of MIDI files to a variety of audio formats like MP3, WMA, FLAC, AAC, MMF, AMR, M4A, M4R, OGG, MP2, WAV, WavPack. Besides that, FormatFactory offers you the option to customize the quality, sample rate( 44100Hz, 22050Hz, 11025Hz, etc. ), Bitrate( 320kbps, 256kbps, 192kbps, 128kbps, etc. ), Audio channel( Stereo, Mono ) and Volume of the output audio.
FormatFactory supports most mainstream Windows OSes, you can use it as an alternative to Direct MIDI to MP3 Converter.