diff -purN --exclude='*~' --exclude='*pyc' gummi-0.4.8/gummi/GummiGUI.py gummi-0.4.8-lily/gummi/GummiGUI.py
--- gummi-0.4.8/gummi/GummiGUI.py	2010-05-16 22:14:53.000000000 +0200
+++ gummi-0.4.8-lily/gummi/GummiGUI.py	2010-07-18 10:30:54.807484687 +0200
@@ -397,8 +397,8 @@ class MainGUI:
 			self.exitinterrupt = True
 		if response == gtk.RESPONSE_OK:
 			filename = chooser.get_filename()
-			if not ".tex" in filename[-4:]:
-				filename = filename + ".tex"
+			if not ".ly" in filename[-3:]:
+				filename = filename + ".ly"
 			self.iofunc.make_environment(filename)
 		chooser.destroy()
 		return filename
diff -purN --exclude='*~' --exclude='*pyc' gummi-0.4.8/gummi/IOFunctions.py gummi-0.4.8-lily/gummi/IOFunctions.py
--- gummi-0.4.8/gummi/IOFunctions.py	2010-05-16 22:14:53.000000000 +0200
+++ gummi-0.4.8-lily/gummi/IOFunctions.py	2010-07-18 10:39:32.975484454 +0200
@@ -60,12 +60,12 @@ class IOFunctions:
 		if filename is not None:
 			self.filename = filename
 			self.texpath = os.path.dirname(self.filename) + "/"
-			if ".tex" in self.filename:
-				self.texname = os.path.basename(self.filename)[:-4]
+			if ".ly" in self.filename:
+				self.texname = os.path.basename(self.filename)[:-3]
 			else:
 				self.texname = os.path.basename(self.filename)
-		(self.workfd, self.workfile) = tempfile.mkstemp(".tex")
-		self.pdffile = self.workfile[:-4] + ".pdf"
+		(self.workfd, self.workfile) = tempfile.mkstemp(".ly")
+		self.pdffile = self.workfile[:-3] + ".pdf"
 		print ("\nEnvironment created for: \n" + \
 				"TEX: " + str(self.filename) + "\n" \
 				"TMP: " + self.workfile + "\n" + \
diff -purN --exclude='*~' --exclude='*pyc' gummi-0.4.8/gummi/Motion.py gummi-0.4.8-lily/gummi/Motion.py
--- gummi-0.4.8/gummi/Motion.py	2010-05-16 22:14:53.000000000 +0200
+++ gummi-0.4.8-lily/gummi/Motion.py	2010-07-18 10:40:13.080486763 +0200
@@ -150,12 +150,10 @@ class Motion:
 
 	def update_pdffile(self):
 		try:
-			pdfmaker = subprocess.Popen(self.texcmd + \
-					' -interaction=nonstopmode \
-					-file-line-error \
-					-halt-on-error \
-					--output-directory="%s" "%s"' \
-					% (self.tempdir, self.workfile), 
+			self.lyname = self.workfile[:-3]
+			command = ' %(texcmd)s --output="%(lyname)s" "%(workfile)s"' % self.__dict__
+			print 'running:', command
+			pdfmaker = subprocess.Popen(command,
 					shell=True, cwd=self.texpath, close_fds=True, \
 					stdin=None, stdout = subprocess.PIPE, stderr=None )
 			self.output = pdfmaker.communicate()[0]
diff -purN --exclude='*~' --exclude='*pyc' gummi-0.4.8/gummi/Preferences.py gummi-0.4.8-lily/gummi/Preferences.py
--- gummi-0.4.8/gummi/Preferences.py	2010-05-16 22:15:12.000000000 +0200
+++ gummi-0.4.8-lily/gummi/Preferences.py	2010-07-18 10:44:20.811484288 +0200
@@ -42,24 +42,13 @@ CFGDEFAULTS = {
 'font': 'Monospace 10',
 'autosaving': False,
 'autosave_timer': 600,
-'typesetter': 'pdflatex',
+'typesetter': 'lilypond',
 'compile_timer': 1,
 'compile_status': True,
 'recent1': '',
 'recent2': '',
 'recent3': '',
-'welcome': '''\documentclass{article}
-\\begin{document}
-
-\\begin{center}
-\Huge{Welcome to Gummi} \\\\\\
-\\\\
-\\LARGE{You are using the ''' + VERSION + ''' version.\\\\
-I welcome your suggestions at\\\\
-http://gummi.midnightcoding.org}\\\\
-\\end{center}
-
-\\end{document}
+'welcome': r'''\relative c' { a b c }
 '''
 }