Sound check does not work

Over many years of iTunes releases, Sound Check has never worked adequately.

Many people here like the 3rd party program iVolume:

Tired of constantly adjusting your music's volume?

On Itunes 11, I'm using iVolume and when I Get Info from the tracks I can see that the volumes are there, changed in a way that should work... But iTunes 11 seems to completely ignore them ! Sound Check is on, I don't know what's wrong. Perhaps the place where the volume tag goes has changed ?

It seems to me, as if volume adjustment as changed in iTunes 11:

Apparently, the adjustment value (that is stored in the track) is ignored, if the following track comes from the same album. Since iTunes computes the values individually for each track, this avoids unwanted "jumps" of the loudness in gapless albums.

On the other hand, this is counter-productive, if you have a playlist with e.g. two tracks form album A, followded by two tracks from album B.

In case the above understanding is correct, not even the use of iVolume will guarantee an even loudness with iTunes 11, which would be very sad.

For the time being, I have downgraded to iTunes 9.1.1, which is kind of tricky on OSX 10.8 and prevents me from connecting to the Store and to the shared iTunes library on my 2nd Mac. Also, you should not do that if yo use iTunes to sync your iPhone!