phono plug to 2 phono jacks for Digital coax

Would it be possible to plug my dvd player and my computer to my Logitech z-5500 with both a coax plug.

 

yeh so long as youve got one of those splitters shown in that pic in ur post, obviously you cant use them both at the same time though or you get some pretty muffled sounds coming out of it

 

Tried it and it works!

 

Bit late but I use the same myself.