The 0.7b version of GXSCC 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.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The application relates to Audio & Video Tools. This free Mac application is an intellectual property of MSX Licensing Corporation.
From the developer:
It's a wrapper that allows for easy use of GXSCC on the Mac environment, almost like with any other Mac application. GXSCC is a quite unique MIDI player that supports MID/SMF/RCP formats. It doesn't depend on sound devices and plays with an emulating SCC sound chip, which was once embraced as an external module for Konami's MSX cartridges, like Nemesis II. It follows that all MIDI songs are changed to chiptunes.
You may want to check out more Mac applications, such as V-Synth Librarian, M-Audio Key Rig or Mandala Virtual Brain, which might be related to GXSCC.