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.