I can barely hear the touch sounds on my Galaxy Nexus ICS I enabled "touch sounds" (click sound when pressing buttons) on my Galaxy Nexus ICS but they are so faint I can barely hear them. The same is true for the screen lock sound.

All other sounds are loud and clear. All volume settings are turned up to maximum. Pressing the hard volume buttons only adjusts the phone volume.

Strangely, in ICS there is no setting for "system volume" like there was in 2.3.3 (only media, ringtones/notifications and alarms). How do I adjust the system volume so I can hear touch sounds?

Thanks in advance...
I'd suggest trying an app like Audio Manager.  I haven't tried it on ICS myself.