According to https://ilovepa.ws/2017/06/08/aztech-sound-cards/ your I38-MMSN842 was made for Packard Bell  and uses an AZT2316R .
Here are other cards using the same chipset :
I38-MMSN841     Packard Bell 030084, Packard Bell 030094, Packard Bell 030099   AZT2316R        Pro 2.0 None    Modem
I38-MMSN842     Packard Bell 030101, Packard Bell 030111        AZT2316R        Pro 2.0 None    Modem
I38-MMSN843     Packard Bell 030106     AZT2316R        Pro 2.0 Onboard Modem
I38-MMSN845     Sound Galaxy Pro 16 II  AZT2316R        Pro 2.0 Header, Expcon  CDROM
I38-MMSN846     Sound Galaxy Nova 16 Extra II-3D, Trust Sound Expert DeLuxe 16-3D (06300)       AZT2316R        Pro 2.0 Header  CDROM
I38-MMSN847     Sound Galaxy Waverider Pro 32-3D, Trust Sound Expert DeLuxe Wave 32-3D (06301)  AZT2316R        Pro 2.0 Onboard CDROM
I38-MMSN852     Sound Galaxy Waverider Pro 32-3D        AZT2316R        Pro 2.0 Onboard CDROM
I38-SN96103     Multimedia Pro 16 IIB-3D        AZT2316R        Pro 2.0 Header  CDROM
Short of finding original Packard Bell drivers, your best bet would be to use drivers meant for a card using the same chipset  (AZT2316R) and that looks as similar as possible to your card . Drivers can be found here  http://vogonsdrivers.com/index.php?catid=3
EDIT: My first choice would be the I38-MMSN845 Sound Galaxy Pro 16 II AZT2316R Pro 2.0 Header, Expcon CDROM