SDL_Mixer library doesn't support MIDI?

@K-L
Let me put it this way ...
If someone ever told you that their emulation is faster in performance tests than real PPC hardware, feel free to give them your test suite.
The benchmarks that are currently available do not reflect the true performance of emulation.
FluidSynth, even with a very small test bank of SF2 thanks, is not able to generate an approximation to the Sam460 - not even generate it.
The A1222 is omitted because it is ... a different approach to PPC hardware to put it mildly.