Index: pyalsa-1.0.22/setup.py
===================================================================
--- pyalsa-1.0.22.orig/setup.py	2010-11-15 17:02:37.295532601 +0900
+++ pyalsa-1.0.22/setup.py	2010-11-15 17:07:49.559533912 +0900
@@ -65,4 +65,6 @@
                 a = '../build/lib.%s-%s-%s/pyalsa/%s' % (uname[0].lower(),
                         uname[4], sys.version[:3], f)
                 print a, f
-                os.symlink(a, 'pyalsa/%s' % f)
+                if not os.path.lexists('pyalsa/%s' % f):
+                        os.unlink('pyalsa/%s' % f)
+                        os.symlink(a, 'pyalsa/%s' % f)
