Convert your WMA files to MP3 audio. WMA (Windows Media Audio) is a digital audio file format created by Microsoft, includes four sub-formats: Windows Media Audio (lossy), Windows Media Audio Voice Professional, Windows Media Audio Lossless, or Windows Media Audio Voice. How to convert WMA to MP3 online free? slicelive.com is the best online converter to convert your WMA file to MP3 in seconds. % free, secure and easy to use! Just drag and drop your files and see them automatically convert to MP3 format. Plus it is absolutely free to convert WMA to MP3 audio format. Convert WMA to MP3 audio format in Windows, Mac, or Mobile. This online converter works regardless of your operating system. All you need is a browser and an internet connection. Do you want to convert a MP3 file to a WMA file? Don't download software - use Zamzar to convert it for free online. Click to convert your MP3 file now. Within seconds, your conversion will be complete depending on the size of the file. After the conversion, download your converted file and send a download link to your email if you want. Converting from WMA to MP3 is secure and free. WMA is a file extension used with windows media player. It stands for Windows media Audio.