Wizard: Storing audio files in a patch to build a drum machine?

I’d love to create a little drum machine ouf of my Wizard, where MIDI note messages could trigger the playback of a number of audio files. The samples are WAV files right now, but I can convert to raw or even arrays of bytes if need be. How might I go about getting the audio files on the Wizard, and how can I access and trigger playback from a patch?

It appears that there’s ample RAM to store a few samples, but I can’t find any specs on how much ROM space there is.

Also thinking about it now, I wouldn’t be surprised if the only user writeable ROM is really just intended for patch storage, so if this idea is isn’t possible that’s totally fine too! I’ve got many more ideas to try out that don’t require sample storage.