i use a program called Switch .google it pretty sure it does mp4 converts lots ..and is free !!
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What file formats does Switch for Windows support ?
Switch can open files in the following formats for Windows:
NOTE
* copy protected files are not decoded
^ playlists
.wav (PCM, ADPCM+, aLaw, uLaw, and others)
.mp3 (MPEG Layer 3)
.mp2 (MPEG Layer 2)
.mpga (MPEG Audio)
.au
.aif/aiff
.gsm
.dct
.vox
.raw
.ogg
.flac
.amr
.wma*
.wmv*
.aac* (not aacPlus)
.m4a*
.mid (General MIDI only)
.act/rcd/rec (newer version of format not supported)
.dvf (Not all dvf recorders are supported)
.msv (Not all msv recorders are supported)
.dss (SP Mode only)
.sri
.shn
.cda
.avi
.mpg/mpeg
.m3u^
.pls^
Switch on a Windows computer can open most other formats which can be decoded by Windows Media Player.
Switch can also save files to the following formats in Windows:
.wav (PCM, ADPCM+, aLaw, uLaw, and others, see here)
.mp3
.au
.aif/aiff
.gsm
.vox
.raw
.ogg
.flac
.rss
.m3u^
.pls^
.wpl
.amr
.aac
.m4a
.wma
These are the ONLY formats we claim to support, but if you want to request support for other formats then please post on our Switch Forum here
Conversions for Switch Mac see here
Download Switch Sound File Converter
Buy Switch Sound File Converter Plus
cheers
