|XP and up have very little support for ISA card chips/chipsets in any case. E.g. they might support some Creative / Soundblaster ones, but they don't support ISA SCSI ones. |
New PCI sound cards and other PCI cards are usually relatively cheap.
Older used PCI sound cards and other older PCI cards are available on the web and are usually even cheaper.
If you need the MIDI support to connect to a musical instrament, the PCI sound card, or the onboard sound on the mboard, should have a built in joystick port (15 pin holes) or the header on a mboard or on the card you can connect one to, although, there are probably separate MIDI adapters available these days.