This is the RagTime 4.0 pre-release ISO image. It contains Beta 6 for Macintosh Computers(m68k or PowerPC, if you wanna run it on a m68k CPU, 68040 is the best option), and Alpha 9 for Windows.
The Macintosh Release expires on November 22nd 1995, at 11:19 am, so be sure that you are going to set the date to something earlier!
The Windows Alpha 9 Release doesn't expire.