The sound enhancer app isnt in the marketplace, but it sure does have an update. I have also done a factory reset of my Trophy when the apps sound enhancer and attentive phone have been pulled out of the marketplace, though only the sound enhancer app is included in my Trophy rom, the attentive phone seems to have been 'cooked' in with htc updates since it does minimize the volume when I pick it up, and mutes it when I flip the phone.
Although, what I'm really looking forward to is the camera modes and STK settings available to 1st gen htc phones, not just radar and titan just because they are shipped with Mango.