MIDI-OX is a MP3 & Audio software developed by Jamie O'Connell. After our trial and test, the software is proved to be official, secure and free. Here is the official description for MIDI-OX:

EditByBSEditor: MIDI-OX is a Windows 95/NT program. It is a 32 bit program which will not operate under earlier versions of Windows. MIDI-OX is a multi-purpose tool: it is both a diagnostic tool and a System Exclusive Librarian. It can perform filtering and mapping of MIDI data streams. It displays incoming MIDI streams, and passes the data to a MIDI output driver or the MIDI Mapper. You can generate MIDI data using the computer keyboard or the built-in control panel. You can even record and log MIDI data and then convert it to a Standard MIDI File for Playback by a sequencer. Some additional information is available in the MIDI and Audio FAQ.