Downloader: try to get low-quality audio for now.

src/main/java/moe/nekojimi/chords/Downloader.java

@@ -55,7 +55,7 @@ public class Downloader implements Consumer<Song>
         try
         {
             messageHandler.accept(song, null);
-            String cmd = "/usr/bin/youtube-dl -x --audio-format=wav --no-playlist --write-info-json " + song.getUrl().toString();
+            String cmd = "/usr/bin/youtube-dl -x -f=worstaudio/worst --audio-format=wav --no-playlist --write-info-json " + song.getUrl().toString();
             System.out.println("Running command: " + cmd);
 //		Process exec = Runtime.getRuntime().exec().split(" "));
             Process exec = new ProcessBuilder(cmd.split(" ")).redirectOutput(ProcessBuilder.Redirect.PIPE).start();
@@ -68,7 +68,7 @@ public class Downloader implements Consumer<Song>
             InputStream in = exec.getInputStream();
             String output = new String(in.readAllBytes(), Charset.defaultCharset());
             System.out.println(output);
-            Matcher matcher = Pattern.compile("Destination: (.*\\.wav)").matcher(output);
+            Matcher matcher = Pattern.compile("Destination: (.*)$").matcher(output);
             if (matcher.find())
                 song.setLocation(new File(matcher.group(1)));
             else if (exec.exitValue() != 0)