Adjust all your audio settings and set them on a schedule using profiles.
Schedule your ringer, notification, media/music, alarm & system volume & WIFI to customize your phone.
Each profile can control:
* Ringer Volume / Vibrate
* Notification Volume / Vibrate
* Media Volume
* Alarm Volume
* System Volume
* Wifi Disable/Enable
silent your phone for sleep, set the volume real low and turn off wifi during work.
Persistent notifications allow you to quickly change between your default profile and currently scheduled profile.
Free version limited to 1 profile, but allows you to try all features.
Lastly, please let me know if you find any bugs or have any suggestions. I use this myself everyday, so always looking to improve it.
Full feature set listed here: http://www.shynnergy.com/silencr/
HTC phones with Sense have sound profiles. Make sure you set yours to Normal. So that silencr can access your phone audio settings.