--- a/src/plugins/phonon/phonon.pro	Tue Jan 26 12:42:25 2010 +0200
+++ b/src/plugins/phonon/phonon.pro	Tue Feb 02 00:43:10 2010 +0200
@@ -7,4 +7,8 @@
 win32:!wince*:contains(QT_CONFIG, phonon-backend): SUBDIRS *= ds9
 wince*:contains(QT_CONFIG, phonon-backend): SUBDIRS *= waveout
 wince*:contains(QT_CONFIG, directshow): SUBDIRS *= ds9
+
+# Note that the MMF backend is in some scenarios an important complement to the
+# Helix backend: the latter requires Symbian signed capabilities, hence MMF
+# provides multimedia for self signed scenarios.
 symbian:contains(QT_CONFIG, phonon-backend): SUBDIRS *= mmf