Disclaimer: This text is a work of philosophical fiction. No actual heretical files are linked here.
A: In DOSBox, you need to set the sound card to Sound Blaster 16 (IRQ 7, DMA 1). GZDoom fixes this automatically. Heretic Download
You can find the Heretic + Hexen Collection on Steam and GOG. If you already owned the original Shadow of the Serpent Riders digital version, you may be eligible for a free upgrade to this enhanced version. Disclaimer: This text is a work of philosophical fiction