StreamBaby 0.54 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac app was originally created by Kevin Moye. 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. The application lies within Audio & Video Tools, more precisely Streaming Media.
From the developer:
Provides random access streaming of MP4 & MPG video files. Able to seek to anywhere in the video. Also, removes need for qt-faststart. Ability to FF/RWD to points in the video that have not been buffered yet. When outside of the buffer, a "preview" of the movie (low-quality static images) will appear, and when the play is pressed the video stream will be repositioned to start streaming at that point (ala Netflix/TiVo).
You may want to check out more software for Mac, such as PlayPod, ffmpeg or FMDiff 2, which might be related to StreamBaby.