A few days ago Albert Beevendorp aka BiFi has released a new release of his tool ROMLOAD. It's a tool that can load about any ROM image up to 64 KB into a Konami Sound Cartridge that comes with Snatcher and SD-Snatcher. With an upgraded Sound Cartridge it's even possible to load 1MegaROM images. Compared to version 1.99l this version supports patching a rom image while it's loading. You can download an archive containing ROMLOAD, a small explanation and the source code here or at BiFi's Home Page.
Relevant link: ROMLOAD 1.99p
