Get the Softaken Audio Video Converter; it is the best software for you, and WMV files can have some compatibility problems on modern devices and applications, but if you change your files to an MP4 file, everything should play perfectly. This software makes it easy to change the file types while preserving the video quality and audio without lag or distortion. It supports a number of essential formats, such as WMV, MP4, AVI, MOV, MKV, FLV, and MP3. This converter also lets you customize the video settings for resolution, bitrate, and codec. The software supports batch settings, giving you the opportunity to convert many WMV files into an MP4. The design is easy to use for everybody, especially those who have no technical experience. This tool runs on all Windows and offers a free demo version so you can assess the performance and operation before moving to the full conversion version.