Update of Emu48 Classic to v1.59

[Eric Rechlin]

What's even more incredible about the work that Christoph did in emulating the behavior of the beeper is that even the sampled sound demos, such as the following, seem to work perfectly on Emu48, possibly even better than on the real calculator!

http://www.hpcalc.org/details/2571

http://www.hpcalc.org/details/2626

I, too, am seriously impressed with all the work Christoph has done over the years. I can honestly say that my site would not be what it is today without his work, because the emulator is a critical timesaver in analyzing new software and preparing screenshots and descriptions, and before Christoph took over, Emu48 would not have served my needs.