TapDancer
tapDancer converts archives of vintage games and other software into audio waveforms that your classic 1980’s-era computer(s) can understand and plays them back, allowing you to once again use these programs on your cherished system(s) using your mobile Android device, and a tape-interface cable or CD-to-cassette adaptor (depending on the computer.)
Currently, tapDancer supports Commodore (TAP / T64 / PRG formats), Sinclair ZX Spectrum (TZX / TAP), Amstrad CPC (CDT), Acorn Electron / BBC (UEF), MSX (CAS) and Atari (CAS).