I just recently purchased the Samsung HL61A750 61" DLP and programmed my Harmony 880 to use the new device. Whenever I click the activity for my PS3, which is hooked up to HDMI port 3, the TV's internal speaker kicks on at full blast, even though it is set to internal mute. I can fix it by turning the TV off and the back on.

Has anyone else experienced this? If so, how'd you fix it?