Notes about the CAS file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to
scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The CAS file type is primarily associated with 'Atari' by Atari. CAS-Cassette image format invented by Ernest R. Schreurs, for his Digital Cassette Image system (includes CAS2SIO, WAV2CAS, and CAS2WAV MS-DOS utilities.