You don't need any daughterboards to use MT-32. Daughterboards' purpose is to receive MIDI commands and produce sound. You need something that will receive MIDI commands from software and supply them to the MIDI output port, where a MT-32 can catch them and produce sound. The IBM daughterboard is not known to be one of best sounding ones anyway.
Any Sound Blaster card with joystick port would do that, provided you have an adaptor like this:
There is a thing called 'MPU-401 intelligent mode' that could bug you in case you wish to use a SB card to connect to MT-32, but it affects a small number of games and there's a software tool (previously mentioned SoftMPU) to deal with it.
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