phaolo: This isn't an idiot question, I'd prefer to select the midi devices too.
By the way, can such old cards be installed on new systems?
timppu: They are not cards, but external MIDI devices (synthesizers).
http://en.wikipedia.org/wiki/Roland_MT-32 http://en.wikipedia.org/wiki/Roland_SC-55 You needed a MPU-401 interface card (or a sound card with MPU-401), and connect that unit to it with a MIDI cable (to the "MIDI Out", so that all MIDI messages would be sent also to the external MIDI unit, which makes it play music).
For modern PCs, the most common way to connect them is to use an USB-MIDI adapter, and connect the external device to it. So, using your USB port.
There were ISA card versions of those synthesizers too, LAPC-1 and SCC-1. They are useless nowadays if you don't have a PC with ISA slots.
patricklibuda: mpu401=intelligent
mididevice=win32
midiconfig=3 (0 MS software synth, 1 and 2 the midi stuff of my SB X-Fi, and 3 the Roland USB MIDI thing to which I connect my MT-32 and SC-55)
For some strange reason this particular line gets ignored.
timppu: One explanation might be that the DOSBox version the GOG game is using is expecting a different entry. So "midiconfig=3" is wrong, while "config=3" would be right. Just a guess, if you didn't try that already. I already mentioned that e.g. the GOG version of Little Big Adventure uses different DOSBox config formatting, than what you showed. Not sure if the difference matters.
Other than that... hopefully someone who has tried the same responds. I recall reading some other GOG forum users also using real MT-32/CM-32L/SC-55 with their GOG games, so I presume they have already done the same, successfully.
I might try the same myself (I have a CM-32L which I don't use anymore, thanks to the Munt emulator), let's see if I could be arsed to connect it... I bought the Roland USB-MIDI adapter, but have never used it.
Unfortunately GOG's installations are not consistent. In X-Wing DOS midiconfig works while in Tie Fighter DOS config works. Looks like not even the folks at GOG are aware of which version they are using with a particular game and which config file syntax would be appropriate.
patricklibuda: nothing automated
tinyE: Shit, I was hoping you had a script or something you could give me. :D