There are many free audio file converter you can download on line. Audacity is an audio file converter that can be use with most pc like mac and others. It works quite fine for a free install.
Go onto your internet and type in 'Audio File Converter'
If you want to buy an audio file converter you are looking at $50 or more. Are you on a MAC or A PC? Most computers have free downloads that work well.
Any type of audio file converter can be downloaded. The software is available for download in plenty of places online. There are also some online audio converters for use with sites such as Youtube, if you're uncomfortable downloading.
A very good file converter that I use all the time. It can convert pictures, video and audio files: http://www.pcfreetime.com
www.mediaconverter.org/, this site allows you to convert audio to video file as long as you have good quality file to begin with, otherwise you might not get a good video. Good luck.
You do not mention what do you need to convert your mp3s from, but luckily there are enough all-round converters out there. You can use Free MP3 WMA Converter, Switch Audio File Converter, BonkEnc Audio Encoder or Free MP3/WMA/OGG Converter; which are all free!
Make sure you have Published/Finished your Windows Movie Maker project file first. Once you have done that, download and install an audio converter on your computer. Use the converter to convert the .wma audio file (produced by Windows Movie Maker) into a .mp3.
Convert your audio like music to the WAV format with this free online WAV converter. Upload your audio file and the conversion will start immediately. You can also extract the audio track of a file to WAV if you upload a video.
Solution 1. Use WonderFox DVD Video Converter to load your dual audio VOB file > keep the dual audio tracks > export as dual audio MKV at once. Solution 2. Rip DVD VOB to MKV (dual audio) with MakeMKV first and compress it with HandBrake later.
You can change the file name extension (format) with an Audio Converter. Free audio converters are available online. Simply Google: free audio converters.
You can use a software called idealshare videogo to convert caf to mp3, aac, wav, wma, ac3, aiff, or apple lossless.
Download and install a free audio converter. Lots available online. Simply Google: free audio converter and choose one.