Bernie, there shouldn’t be any reason you couldn’t load the disc’s into your computer for midi playback. Native Instruments has there own software player which should load with the set. If not...you can download the NI player for free at their website. Komplete 5 is pretty old now so there might be some compatibility issues, but it should still work.

East West also includes their own software player. Worst case...East West is still very much active, so contacting them through customer service might help.
Good luck,
Mitch