diff --git a/Cargo.toml b/Cargo.toml
index 89a90ed..b5fdd03 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 resolver = "2"
 
 members = [
-	"crates/dtacheck",
+	"crates/dtacheck", "crates/milo",
 	"crates/swap_art_bytes",
 ]
 
diff --git a/crates/milo/Cargo.toml b/crates/milo/Cargo.toml
new file mode 100644
index 0000000..ea01bf4
--- /dev/null
+++ b/crates/milo/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "milo"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+byteorder = "1.5.0"
+clap = { version = "4.4.16", features = ["derive"] }
+flate2 = "1.0.28"
+tempfile = "3.9.0"
diff --git a/crates/milo/src/ark.rs b/crates/milo/src/ark.rs
new file mode 100644
index 0000000..10c57fa
--- /dev/null
+++ b/crates/milo/src/ark.rs
@@ -0,0 +1,34 @@
+use std::error::Error;
+use std::fs::File;
+
+use crate::fio::read_u32;
+use crate::traits::Load;
+pub mod amp;
+pub mod freq;
+
+pub enum ArkTypes {
+    FreqArk(freq::FreqArchive),
+    AmpArk(amp::AmpArchive),
+}
+
+pub fn load_ark_file(f: &mut File) -> Result<ArkTypes, Box<dyn Error>> {
+    let vercheck = read_u32(f, true)?;
+    let ark: ArkTypes;
+    match vercheck {
+        0x004B5241 => {
+            let mut freq = freq::FreqArchive::new();
+            freq.load(f, 0)?;
+            ark = ArkTypes::FreqArk(freq);
+        }
+        0..=2 => {
+            let mut amp = amp::AmpArchive::new();
+            amp.load(f, 0)?;
+            ark = ArkTypes::AmpArk(amp);
+        }
+        _ => {
+            println!("unrecognized ark version. if gh1 or later, use the .hdr and not the .ark");
+            return Err::<_, Box<dyn Error>>("unkver".into());
+        }
+    }
+    Ok(ark)
+}
diff --git a/crates/milo/src/ark/amp.rs b/crates/milo/src/ark/amp.rs
new file mode 100644
index 0000000..ebdfa2b
--- /dev/null
+++ b/crates/milo/src/ark/amp.rs
@@ -0,0 +1,116 @@
+use std::fmt::{Formatter, Display};
+use std::error::Error;
+
+use crate::traits::Load;
+use crate::fio;
+
+#[derive(Clone, Copy)]
+struct AmpFileEntry {
+    offset: u32,
+    file_name_idx: u32,
+    folder_name_idx: u32,
+    size: u32,
+    inflated_size: u32,
+}
+
+impl AmpFileEntry {
+    pub fn new() -> Self {
+        Self {
+            offset: 0,
+            file_name_idx: 0,
+            folder_name_idx: 0,
+            size: 0,
+            inflated_size: 0,
+        }
+    }
+}
+
+impl Load for AmpFileEntry {
+    fn load(&mut self, f: &mut std::fs::File, ver: u32) -> Result<(), Box<dyn std::error::Error>> {
+        if ver != 1 {self.offset = fio::read_u32(f, true)?;}
+        self.file_name_idx = fio::read_u32(f, true)?;
+        self.folder_name_idx = fio::read_u32(f, true)?;
+        if ver == 1 {self.offset = fio::read_u32(f, true)?;}
+        self.size = fio::read_u32(f, true)?;
+        self.inflated_size = fio::read_u32(f, true)?;
+        Ok(())
+    }
+}
+
+impl Display for AmpFileEntry {
+    fn fmt(&self, fmt: &mut Formatter<'_>) -> std::fmt::Result {
+        fmt.write_fmt(format_args!("Offset: {}", self.offset))?;
+        fmt.write_fmt(format_args!("File name index: {}", self.file_name_idx))?;
+        fmt.write_fmt(format_args!("Folder name index: {}", self.folder_name_idx))?;
+        fmt.write_fmt(format_args!("Size: {}", self.size))?;
+        fmt.write_fmt(format_args!("Inflated size: {}", self.inflated_size))?;
+        Ok(())
+    }
+}
+
+pub struct AmpArchive {
+    version: u32,
+    entry_ct: u32,
+    entries: Vec<AmpFileEntry>,
+    str_table_size: u32,
+    string_table: Vec<String>,
+    string_idx_count: u32,
+    string_idx_entries: Vec<u32>
+}
+
+impl AmpArchive {
+    pub fn new() -> Self {
+        Self {
+            version: 0,
+            entry_ct: 0,
+            entries: vec![],
+            str_table_size: 0,
+            string_table: vec![],
+            string_idx_count: 0,
+            string_idx_entries: vec![]
+        }
+    }
+}
+
+impl Load for AmpArchive {
+    fn load(&mut self, f: &mut std::fs::File, _: u32) -> Result<(), Box<dyn Error>> {
+        self.version = fio::read_u32(f, true)?;
+        self.entry_ct = fio::read_u32(f, true)?;
+        for _ in 0..self.entry_ct {
+            let mut ent = AmpFileEntry::new();
+            ent.load(f, self.version)?;
+            self.entries.push(ent);
+        }
+        self.str_table_size = fio::read_u32(f, true)?;
+        for _ in 0..self.str_table_size {
+            let st = fio::readstr(f)?;
+            self.string_table.push(st);
+        }
+        self.string_idx_count = fio::read_u32(f, true)?;
+        for _ in 0..self.string_idx_count {
+            let idx = fio::read_u32(f, true)?;
+            self.string_idx_entries.push(idx);
+        }
+        Ok(())
+    }
+}
+
+impl Display for AmpArchive {
+    fn fmt(&self, fmt: &mut Formatter<'_>) -> std::fmt::Result {
+        fmt.write_fmt(format_args!("Version: {}", self.version))?;
+        fmt.write_str("BEGIN ENTRIES")?;
+        for ent in self.entries.clone() {
+            ent.fmt(fmt)?;
+        }
+        fmt.write_str("END ENTRIES")?;
+        fmt.write_fmt(format_args!("String table size: {}", self.str_table_size))?;
+        for i in 0..self.str_table_size {
+            fmt.write_fmt(format_args!("Entry {i}: {}", self.string_table[i as usize]))?;
+        }
+        fmt.write_fmt(format_args!("String index count: {}", self.string_idx_count))?;
+        for i in 0..self.string_idx_entries.len() {
+            fmt.write_fmt(format_args!("Index {i}: {}", self.string_idx_entries[i]))?;
+        }
+        Ok(())
+    }
+}
diff --git a/crates/milo/src/ark/freq.rs b/crates/milo/src/ark/freq.rs
new file mode 100644
index 0000000..c00df46
--- /dev/null
+++ b/crates/milo/src/ark/freq.rs
@@ -0,0 +1,109 @@
+use crate::traits::Load;
+use crate::fio;
+use std::fmt::Display;
+use std::fs::File;
+use std::error::Error;
+
+#[derive(Clone, Copy)]
+struct FreqFileEntry { // 24 bytes
+    unknown: u32, // Path name hash?
+    file_name_offset: u32,
+    folder_name_index: u16,
+    block_offset: u16,
+    block: u32, // Use block * block_size + block_offset to get file position
+    file_size: u32,
+    inflated_size: u32, // Same as file size if not compressed
+    fake_file_offset: u32 // = (block * 2048) + block_offset;
+}
+
+impl Load for FreqFileEntry {
+    fn load(&mut self, f: &mut File, _: u32) -> Result<(), Box<dyn Error>> {
+        self.unknown = fio::read_u32(f, true)?;
+        self.file_name_offset = fio::read_u32(f, true)?;
+        self.folder_name_index = fio::read_u16(f, true)?;
+        self.block_offset = fio::read_u16(f, true)?;
+        self.block = fio::read_u32(f, true)?;
+        self.file_size = fio::read_u32(f, true)?;
+        self.inflated_size = fio::read_u32(f, true)?;
+        self.fake_file_offset = (self.block * 2048) + self.block_offset as u32;
+        Ok(())
+    }
+}
+
+impl Display for FreqFileEntry {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_fmt(format_args!("Unknown value (possibly a pathname hash?): {}", self.unknown))?;
+        f.write_fmt(format_args!("File name offset: {}", self.file_name_offset))?;
+        f.write_fmt(format_args!("Folder name index: {}", self.folder_name_index))?;
+        f.write_fmt(format_args!("Block offset: {}", self.block_offset))?;
+        f.write_fmt(format_args!("Block #: {}", self.block))?;
+        f.write_fmt(format_args!("File offset (calculated): {}", self.fake_file_offset))?;
+        f.write_fmt(format_args!("File size: {}", self.file_size))?;
+        f.write_fmt(format_args!("Inflated filesize: {}", self.inflated_size))?;
+        Ok(())
+    }
+}
+
+#[derive(Clone, Copy)]
+pub struct FreqArchive {
+    magic: u32, // technically a char[4] but 0x204B5241 is easier to check
+    version: u32,
+    file_entry_offset: u32, // Always 256
+    file_entry_count: u32,
+    folder_entry_offset: u32,
+    folder_entry_count: u32,
+    string_table_offset: u32,
+    string_count: u32,
+    total_hdr_size: u32, // Size of header + string offsets + string table
+    block_size: u32, // Used for padding, always 2048?
+}
+
+impl FreqArchive {
+    pub fn new() -> Self {
+        Self {
+            magic: 0x204B5241,
+            version: 0,
+            file_entry_offset: 256,
+            file_entry_count: 0,
+            folder_entry_offset: 0,
+            folder_entry_count: 0,
+            string_table_offset: 0,
+            string_count: 0,
+            total_hdr_size: 40,
+            block_size: 2048
+        }
+    }
+}
+
+impl Load for FreqArchive {
+    fn load(&mut self, f: &mut File, _: u32) -> Result<(), Box<dyn Error>> {
+        self.magic = fio::read_u32(f, true)?;
+        self.version = fio::read_u32(f, true)?;
+        self.file_entry_offset = fio::read_u32(f, true)?;
+        self.file_entry_count = fio::read_u32(f, true)?;
+        self.folder_entry_offset = fio::read_u32(f, true)?;
+        self.folder_entry_count = fio::read_u32(f, true)?;
+        self.string_table_offset = fio::read_u32(f, true)?;
+        self.string_count = fio::read_u32(f, true)?;
+        self.total_hdr_size = fio::read_u32(f, true)?;
+        self.block_size = fio::read_u32(f, true)?;
+        Ok(())
+    }
+}
+
+impl Display for FreqArchive {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_fmt(format_args!("Magic value: {:#010X} \n", self.magic))?;
+        f.write_fmt(format_args!("Should be    0x004B5241.\n"))?;
+        f.write_fmt(format_args!("Version: {}\n", self.version))?;
+        f.write_fmt(format_args!("File entry offset: {}\n", self.file_entry_offset))?;
+        f.write_fmt(format_args!("File entry count: {}\n", self.file_entry_count))?;
+        f.write_fmt(format_args!("Folder entry offset: {}\n", self.folder_entry_offset))?;
+        f.write_fmt(format_args!("Folder entry count: {}\n", self.folder_entry_count))?;
+        f.write_fmt(format_args!("String table offset: {}\n", self.string_table_offset))?;
+        f.write_fmt(format_args!("String count: {}\n", self.string_count))?;
+        f.write_fmt(format_args!("Total header size (includes string table): {}\n", self.total_hdr_size))?;
+        f.write_fmt(format_args!("Block size: {}\n", self.block_size))?;
+        Ok(())
+    }
+}
diff --git a/crates/milo/src/fio.rs b/crates/milo/src/fio.rs
new file mode 100644
index 0000000..77966a6
--- /dev/null
+++ b/crates/milo/src/fio.rs
@@ -0,0 +1,52 @@
+use std::fs::File;
+use std::error::Error;
+use std::io::Read;
+use byteorder::{LittleEndian, BigEndian, ReadBytesExt};
+
+fn readlen(f: &mut File, len: usize) -> Result<Vec<u8>, Box<dyn Error>> {
+    let mut buf = vec![0u8; len];
+    f.read_exact(&mut buf)?;
+    Ok(buf)
+}
+
+pub fn readstr(src: &mut File) -> Result<String, Box<dyn Error>> {
+    let mut ret: String = String::with_capacity(256);
+    for _ in 0..256 { // 256 is a good length limit, right
+        let asciidiot = readlen(src, 1)?[0];
+        if asciidiot == 0 {
+            ret.shrink_to_fit();
+            break
+        }
+        let test = char::from_u32(asciidiot as u32);
+        ret.push(test.expect("found eof"));
+    }
+    Ok(ret)
+}
+
+pub fn read_u32(f: &mut File, little_endian: bool) -> Result<u32, Box<dyn Error>> {
+    if little_endian { Ok(f.read_u32::<LittleEndian>()?) }
+    else { Ok(f.read_u32::<BigEndian>()?) }
+}
+
+pub fn read_i32(f: &mut File, little_endian: bool) -> Result<i32, Box<dyn Error>> {
+    if little_endian { Ok(f.read_i32::<LittleEndian>()?) }
+    else { Ok(f.read_i32::<BigEndian>()?) }
+}
+
+pub fn read_u16(f: &mut File, little_endian: bool) -> Result<u16, Box<dyn Error>> {
+    if little_endian { Ok(f.read_u16::<LittleEndian>()?) }
+    else { Ok(f.read_u16::<BigEndian>()?) }
+}
+
+pub fn read_i16(f: &mut File, little_endian: bool) -> Result<i16, Box<dyn Error>> {
+    if little_endian { Ok(f.read_i16::<LittleEndian>()?) }
+    else { Ok(f.read_i16::<BigEndian>()?) }
+}
+
+pub fn read_u8(f: &mut File) -> Result<u8, Box<dyn Error>> { Ok(f.read_u8()?) }
+pub fn read_i8(f: &mut File) -> Result<i8, Box<dyn Error>> { Ok(f.read_i8()?) }
+
+pub fn read_f32(f: &mut File, little_endian: bool) -> Result<f32, Box<dyn Error>> {
+    if little_endian { Ok(f.read_f32::<LittleEndian>()?) }
+    else { Ok(f.read_f32::<BigEndian>()?) }
+}
diff --git a/crates/milo/src/lib.rs b/crates/milo/src/lib.rs
new file mode 100644
index 0000000..c929915
--- /dev/null
+++ b/crates/milo/src/lib.rs
@@ -0,0 +1,3 @@
+pub mod ark;
+pub mod traits;
+mod fio;
diff --git a/crates/milo/src/main.rs b/crates/milo/src/main.rs
new file mode 100644
index 0000000..2167d67
--- /dev/null
+++ b/crates/milo/src/main.rs
@@ -0,0 +1,21 @@
+use std::fs::File;
+use std::error::Error;
+use std::path::PathBuf;
+use clap::Parser;
+use milo::ark;
+use milo::traits::Load;
+
+#[derive(clap::Parser)]
+struct Args {
+    input: PathBuf,
+}
+
+fn main() -> Result<(), Box<dyn Error>> {
+    println!("Hello, world!");
+    let args = Args::parse();
+    let mut infile = File::open(args.input)?;
+    let mut freqindasheets = ark::freq::FreqArchive::new();
+    freqindasheets.load(&mut infile, 0)?;
+    println!("{}", freqindasheets);
+    Ok(())
+}
diff --git a/crates/milo/src/traits.rs b/crates/milo/src/traits.rs
new file mode 100644
index 0000000..46e7a11
--- /dev/null
+++ b/crates/milo/src/traits.rs
@@ -0,0 +1,15 @@
+use std::error::Error;
+use std::fs::File;
+
+pub trait Load {
+    fn load(&mut self, f: &mut File, ver: u32) -> Result<(), Box<dyn Error>>;
+}
+
+pub trait Save {
+    fn save(&mut self, f: &mut File) -> Result<(), Box<dyn Error>>;
+}
+
+pub trait Port {
+    fn import(&mut self, f: &mut File) -> Result<(), Box<dyn Error>>;
+    fn export(&mut self, f: &mut File) -> Result<(), Box<dyn Error>>;
+}