This appears to be a problem with many players including Windows Media Player. When you type the regsvr32 command you need to be in the directory where you stored the file. ax file somewhere convenient on your system and register it from the command line with 'regsvr32 AudioTypeConvert.ax'.' This is done without altering the audio data in any way. high-definition surround up to 7.1 > High-definition 24-bit/1 92kHz audio up to 7.1 > Professional 24-bit/96kHz recording > Real-time stereo-to-surround. This filter registers itself as being able to handle this legacy format, and at the same time converts to a format the DirectShow Audio Renderer will accept (WAVEFORMATEXTENSIBLE). By default DirectShow players (such as Media Player) won't be able to play these files as the Audio Renderer refuses to accept this legacy type even though it is perfectly capable of playing it. To put it another way, an MQA system that plays a suitably encoded 24/96 music filethat is, a file with a 24-bit word length and 96kHz sample frequencyis claimed to be more faithful to the. 'Legacy HD Audio Filter - Many audio processing applications still produce high-definition audio such as 24bit/96kHz in a legacy WAV format. Buy FX-Audio DAC-X6 Mini HiFi 2. I have been trying to play a 24 bit 96kHz WAV file unsuccessfully in JRiver.