diff --git a/index.ts b/index.ts
index 41f7431..45cdd57 100644
--- a/index.ts
+++ b/index.ts
@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-import { parseArgs } from "node:util";
+import util from "node:util";
 import { createOpenAICompatible } from "@ai-sdk/openai-compatible";
 import { streamText } from "ai";
 
@@ -7,7 +7,7 @@ import { initConfig, loadConfig } from "./src/config";
 import { Conversation } from "./src/conversation";
 import Renderer from "./src/render";
 
-const { values: args, positionals } = parseArgs({
+const { values: args, positionals } = util.parseArgs({
   args: process.argv.slice(2),
   options: {
     model: { type: "string" },
diff --git a/tts.ts b/tts.ts
index 844166b..7bf3ceb 100644
--- a/tts.ts
+++ b/tts.ts
@@ -1,10 +1,11 @@
 #!/usr/bin/env node
+import events from "node:events";
 import fs from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
 import process from "node:process";
-import { createInterface } from "node:readline";
-import { parseArgs } from "node:util";
+import readline from "node:readline";
+import util from "node:util";
 import { Readability } from "@mozilla/readability";
 import chalk from "chalk";
 import { execa } from "execa";
@@ -14,7 +15,7 @@ import wrapAnsi from "wrap-ansi";
 async function main() {
   const start = Date.now();
 
-  const { values: args } = parseArgs({
+  const { values: args } = util.parseArgs({
     args: process.argv.slice(2),
     options: {
       wait: { type: "boolean" },
@@ -32,41 +33,34 @@ async function main() {
   const url = args.url ?? args.u;
   const edit = args.edit ?? args.e;
 
-  let input = url
-    ? url
-    : await new Promise<string>((resolve) => {
-        let data = "";
-        process.stdin.setEncoding("utf8");
-        process.stdin.on("data", (chunk) => (data += chunk));
-        process.stdin.on("end", () => resolve(data));
-      });
-  input = input.trim();
+  let input = "";
 
-  if (url !== undefined) {
-    const result = await fetch(input);
-    const window = new Window({ url: input });
+  if (url?.trim()) {
+    const result = await fetch(url.trim());
+    const window = new Window({ url: url.trim() });
     const doc = window.document;
     doc.write(await result.text());
     await window.happyDOM.waitUntilComplete();
     const readable = new Readability(doc).parse();
-    if (readable?.textContent) input = readable.textContent.trim();
-    if (input === result.url) {
-      console.error("Unable to read web page.");
-      process.exit(1);
+    if (!readable?.textContent) {
+      throw "Unable to read web page.";
     }
+    input = readable.textContent.trim();
+  } else {
+    process.stdin.setEncoding("utf8");
+    process.stdin.on("data", (data) => {
+      input += data;
+    });
+    await events.once(process.stdin, "end");
   }
 
   if (!input) {
-    console.error("No input given.");
-    process.exit(1);
+    throw "No input given.";
   }
 
   const home = os.homedir();
   const cwd = path.join(home, ".ttsc");
 
-  const wavs = fs.glob(path.join(cwd, "*.wav"));
-  for await (const wav of wavs) await fs.rm(wav);
-
   if (edit) {
     const file = path.join(cwd, "input.txt");
     await fs.writeFile(file, input);
@@ -75,7 +69,8 @@ async function main() {
       cwd,
       stdin: "inherit",
       stdout: "inherit",
-    })`${editor} input.txt`;
+      stderr: "inherit",
+    })`${editor} ${file}`;
     input = await fs.readFile(file, "utf8");
   }
 
@@ -86,6 +81,9 @@ async function main() {
     ),
   );
 
+  const wavs = fs.glob(path.join(cwd, "*.wav"));
+  for await (const wav of wavs) await fs.rm(wav);
+
   const koko = execa({
     cwd,
     input,
@@ -103,7 +101,8 @@ async function main() {
   }
 
   let first = true;
-  const rl = createInterface({ input: koko.stdout });
+  const files = [];
+  const rl = readline.createInterface({ input: koko.stdout });
 
   for await (const line of rl) {
     const trimmed = line.trim();
@@ -124,13 +123,14 @@ async function main() {
       console.log(chalk.green(`\nTime-to-audio: ${duration}s`));
     }
 
-    const [columns] = process.stdout.getWindowSize();
-    const text = wrapAnsi(info.text, columns);
     const file = path.join(cwd, `${info.file}.wav`);
 
     if (wait) {
+      files.push(file);
       process.stdout.write(".");
     } else {
+      const [columns] = process.stdout.getWindowSize();
+      const text = wrapAnsi(info.text, columns);
       console.log(`\n${chalk.blue(file)}\n${text}\n`);
       await execa({
         cwd,
@@ -142,7 +142,7 @@ async function main() {
   }
 
   await koko;
-  if (!wait) process.exit();
+  if (!wait) return;
 
   const stop = Date.now();
   const duration = ((stop - start) / 1000).toFixed(2);
@@ -150,8 +150,7 @@ async function main() {
 
   console.log(chalk.yellow(`Combining audio with sox...\n`));
   try {
-    const wavs = await Array.fromAsync(fs.glob(path.join(cwd, "*.wav")));
-    await execa({ cwd, shell: true })`sox ${wavs} output.wav`;
+    await execa({ cwd, shell: true })`sox ${files} output.wav`;
   } catch (err) {
     if (err instanceof Object && "code" in err && err.code === "ENOENT") {
       console.error("Sox not found. Unable to combine outputs.");
@@ -159,7 +158,7 @@ async function main() {
       throw err;
     }
     console.log(chalk.yellow(`Audio available in ${cwd}`));
-    process.exit();
+    return;
   }
 
   const [columns] = process.stdout.getWindowSize();