MP3 Encoder Decoder X Cost: $25 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions MP3 Encoder Decoder X: Active X Controls To Encode Wave files to MP3 Files. This file does not use any extra dll files. The Encoder is fast and the sound quality is great. Active X To Decode Mp3 Files To Wave.