The 5.2.6 version of SoundConverterX for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The most popular version among the program users is 5.2.
The actual developer of this software for Mac is Dawnark. This program's bundle is identified as com.dawnark.soundconverter. The program lies within Audio & Video Tools, more precisely Editors & Converters. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
SoundConverterX is a very easy-to-use audio tool, which help you convert almost all popular formats like WMA, to MP3, M4A, AAC, etc., so you can play the output with iTunes or other device like iPhone.
You may want to check out more Mac applications, such as uSeesoft DVD Ripper or Aiseesoft WMV Converter for Mac, which might be similar to SoundConverterX.