What is WMA?
Windows Media Audio files use the WMA file extension. WMA is a lossy audio format developed by Microsoft to rival the MP3 and RealAudio codecs. The technology itself has four different codecs that offer varying audio quality. The Windows Media Audio Lossless codec converts to WMA without any data loss but it is not commonly used. When referring to WMA, the lossy codec is what is usually being referred to. Since the format and technology is proprietary and owned by Microsoft, the Windows Media Player is equipped to support the WMA format.
If you use a Windows PC, you likely have a large number of WMA files and the format might possibly make up the majority of your music library. If you decide to switch to a Mac or you have a WMA recording that you want to share with someone on the OS X or iOS platforms you will either have to convert them before they are shared, or your recipient will have to do so.
How do I open a WMA file online?
A quicker way to open a WMA file is to upload it to Jumpshare and let the file viewer take care of the rest. Jumpshare works well on both desktop and mobile devices and the file will playback in any modern bowser. Playback can be paused/played, you can jump to any position in the audio file with the seek bar and manage the volume.