diff --git a/SabreTools.Library/DatFiles/DatFile.cs b/SabreTools.Library/DatFiles/DatFile.cs
index 23c82f47..c70b6c26 100644
--- a/SabreTools.Library/DatFiles/DatFile.cs
+++ b/SabreTools.Library/DatFiles/DatFile.cs
@@ -5737,7 +5737,17 @@ namespace SabreTools.Library.DatFiles
 				outfileNames.Add(DatFormat.DOSCenter, CreateOutfileNamesHelper(outDir, ".dc.dat", overwrite));
 			}
 
-			//MAME Listroms
+			// Logiqx XML
+			if ((DatFormat & DatFormat.Logiqx) != 0)
+			{
+				outfileNames.Add(DatFormat.Logiqx, CreateOutfileNamesHelper(outDir, ".xml", overwrite));
+			}
+			if ((DatFormat & DatFormat.LogiqxDepreciated) != 0)
+			{
+				outfileNames.Add(DatFormat.LogiqxDepreciated, CreateOutfileNamesHelper(outDir, ".xml", overwrite));
+			}
+
+			// MAME Listroms
 			if ((DatFormat & DatFormat.Listrom) != 0
 				&& (DatFormat & DatFormat.AttractMode) == 0)
 			{
@@ -5749,14 +5759,22 @@ namespace SabreTools.Library.DatFiles
 				outfileNames.Add(DatFormat.Listrom, CreateOutfileNamesHelper(outDir, ".lr.txt", overwrite));
 			}
 
-			// Logiqx XML
-			if ((DatFormat & DatFormat.Logiqx) != 0)
+			// MAME Listxml
+			if (((DatFormat & DatFormat.Listxml) != 0)
+				&& (DatFormat & DatFormat.Logiqx) == 0
+				&& (DatFormat & DatFormat.LogiqxDepreciated) == 0
+				&& (DatFormat & DatFormat.SabreDat) == 0
+				&& (DatFormat & DatFormat.SoftwareList) == 0)
 			{
-				outfileNames.Add(DatFormat.Logiqx, CreateOutfileNamesHelper(outDir, ".xml", overwrite));
+				outfileNames.Add(DatFormat.Listxml, CreateOutfileNamesHelper(outDir, ".xml", overwrite));
 			}
-			if ((DatFormat & DatFormat.LogiqxDepreciated) != 0)
+			if (((DatFormat & DatFormat.Listxml) != 0
+				&& ((DatFormat & DatFormat.Logiqx) != 0
+					|| (DatFormat & DatFormat.LogiqxDepreciated) != 0
+					|| (DatFormat & DatFormat.SabreDat) != 0
+					|| (DatFormat & DatFormat.SoftwareList) != 0)))
 			{
-				outfileNames.Add(DatFormat.LogiqxDepreciated, CreateOutfileNamesHelper(outDir, ".xml", overwrite));
+				outfileNames.Add(DatFormat.Listxml, CreateOutfileNamesHelper(outDir, ".mame.xml", overwrite));
 			}
 
 			// Missfile
@@ -5775,6 +5793,7 @@ namespace SabreTools.Library.DatFiles
 			if (((DatFormat & DatFormat.OfflineList) != 0)
 				&& (DatFormat & DatFormat.Logiqx) == 0
 				&& (DatFormat & DatFormat.LogiqxDepreciated) == 0
+				&& (DatFormat & DatFormat.Listxml) == 0
 				&& (DatFormat & DatFormat.SabreDat) == 0
 				&& (DatFormat & DatFormat.SoftwareList) == 0)
 			{
@@ -5783,6 +5802,7 @@ namespace SabreTools.Library.DatFiles
 			if (((DatFormat & DatFormat.OfflineList) != 0
 				&& ((DatFormat & DatFormat.Logiqx) != 0
 					|| (DatFormat & DatFormat.LogiqxDepreciated) != 0
+					|| (DatFormat & DatFormat.Listxml) != 0
 					|| (DatFormat & DatFormat.SabreDat) != 0
 					|| (DatFormat & DatFormat.SoftwareList) != 0)))
 			{
diff --git a/SabreTools.Library/Data/Flags.cs b/SabreTools.Library/Data/Flags.cs
index 32e797ca..381fc716 100644
--- a/SabreTools.Library/Data/Flags.cs
+++ b/SabreTools.Library/Data/Flags.cs
@@ -194,9 +194,10 @@ namespace SabreTools.Library.Data
     {
 		// XML Formats
 		Logiqx = 0x01,
-		LogiqxDepreciated = Logiqx << 1,
-		SoftwareList = LogiqxDepreciated << 1, // Special internal type for "game" instead of "machine"
-		OfflineList = SoftwareList << 1,
+		LogiqxDepreciated = Logiqx << 1, // Special internal type for "game" instead of "machine"
+		SoftwareList = LogiqxDepreciated << 1,
+		Listxml = SoftwareList << 1,
+		OfflineList = Listxml << 1,
 		SabreDat = OfflineList << 1,
 
 		// Propietary Formats
diff --git a/SabreTools.Library/Tools/Utilities.cs b/SabreTools.Library/Tools/Utilities.cs
index 57d56dab..7ce32043 100644
--- a/SabreTools.Library/Tools/Utilities.cs
+++ b/SabreTools.Library/Tools/Utilities.cs
@@ -619,6 +619,8 @@ namespace SabreTools.Library.Tools
 					return new DosCenter(baseDat);
 				case DatFormat.Listrom:
 					return new Listrom(baseDat);
+				case DatFormat.Listxml:
+					return new Listxml(baseDat);
 				case DatFormat.Logiqx:
 					return new Logiqx(baseDat, false);
 				case DatFormat.LogiqxDepreciated:
@@ -1096,7 +1098,15 @@ namespace SabreTools.Library.Tools
 				// Get the first two lines to check
 				StreamReader sr = File.OpenText(filename);
 				string first = sr.ReadLine().ToLowerInvariant();
+				while (String.IsNullOrWhiteSpace(first))
+				{
+					first = sr.ReadLine();
+				}
 				string second = sr.ReadLine().ToLowerInvariant();
+				while (String.IsNullOrWhiteSpace(second))
+				{
+					second = sr.ReadLine();
+				}
 				sr.Dispose();
 
 				// If we have an XML-based DAT
@@ -1106,6 +1116,12 @@ namespace SabreTools.Library.Tools
 					{
 						return DatFormat.Logiqx;
 					}
+					else if (second.StartsWith("<!DOCTYPE mame")
+						|| second.StartsWith("<mame")
+						|| second.StartsWith("<m1"))
+					{
+						return DatFormat.Listxml;
+					}
 					else if (second.StartsWith("<!doctype softwarelist"))
 					{
 						return DatFormat.SoftwareList;
diff --git a/SabreTools/SabreTools.cs b/SabreTools/SabreTools.cs
index ef2d249e..14fc6d40 100644
--- a/SabreTools/SabreTools.cs
+++ b/SabreTools/SabreTools.cs
@@ -341,6 +341,9 @@ namespace SabreTools
 					case "output-listrom":
 						datHeader.DatFormat |= DatFormat.Listrom;
 						break;
+					case "output-listxml": // TODO: Not added to help at all
+						datHeader.DatFormat |= DatFormat.Listxml;
+						break;
 					case "output-miss":
 						datHeader.DatFormat |= DatFormat.MissFile;
 						break;