If power consumption is important to you, go with an intel mobo, since you current is a micro atx mobo maybe something like DH67BLB3
(even has displayport). I haven't had any issues with both intel mobos im using, but i seen some comments about some memories causing issues, so if you go this route check reviews for what people are already using and go with that to avoid incompatibilities.
For CPU, for music and 1080p playback, a Intel G530
should be more than enough, comes with intel HD2000, now if you want a slightly better igpu, then consider Intel Core I3-2105
, the lowest cpu that comes with intel HD3000.