The intro has to, because it uses some sort of MIDI music instead of streamed audio.
The SPU IRQ hack has to be disabled for smooth XA playing, SPUAsync->Wait is also a good way to make MDECs have smooth sounds (you should disable any frame limitation/skipping options in your gfx plugin and increase your sound buffer a bit).
Also take a look on
www.ngemu.com/kane for some gfx plugin config info.
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