v86: Can't get audio output except for a simple beep

I can’t figure out how to play audio from within a Linux env. I have testing building a Debian install with sox installed (Build scripts:https://git.sr.ht/~hamner/copyleftmage.school) Running example: http://copyleftmage.school/v86/live/shell_full_boot.html Relevant setup data:

window.onload = function() {
    var emulator = new V86Starter({
        wasm_path: "../build/v86.wasm",
        memory_size: 512 * 1024 * 1024,
        vga_memory_size: 8 * 1024 * 1024,
        screen_container: document.getElementById("screen_container"),
        cmdline: "rw init=/bin/systemd root=host9p console=ttyS0 spectre_v2=off pti=off",
        bios: {
            url: "../bios/seabios.bin",
        },
        vga_bios: {
            url: "../bios/vgabios.bin",
        },
        filesystem: {
            baseurl: "/v86/output/images/debian-rootfs-flat/",
            basefs: "/v86/output/images/debian-fs.json",
        },
        autostart: true,
        bzimage_initrd_from_filesystem: true,
        cmdline: [
            "rw",
            "root=host9p rootfstype=9p rootflags=trans=virtio,cache=loose",
            "init=/usr/bin/init-openrc",
        ].join(" "),
    });

Running arecord -l shows no sounds cards found. Running beep plays a beep sound but also outputs no devices found. Options to change to tone don’t work. My goal is the build this site out to be a teaching tool, and audio would be a big help.