A splitter just makes one port into 2 or more ports, does nothing to reduce the cable runs. A spliter would cost about the same as a 'long' run HDMI & you can not run HDMI over 100ft without a booster, those are costly.
You would still have to run an IR repeater so you can control the player, too.
Just move the bluray player to where the tv is...
HH Greg has recommended the use of a HDMI Splitter as a means of avoiding an additional long HDMI cable direct from the BluRay box to the Samsung TV. The adduitional cable would require routing thru the floor ,across 10 feet and up the chimney box..........douable but troublesome. Anyone using an HDMI splitter for this purpose ??