You could try this:
null = [] spawn {
laptop = createVehicle ["Land_SatellitePhone_F", player modelToWorld [0,5,0], [], 0, "NONE"];
[laptop,"ASY_fnc_setIdleTime",false,false] spawn BIS_fnc_MP;
[{
hack1 = laptop addAction ["<t color='#FF0000'>Hack the Satellite Transmission</t>",{
[{
laptop removeAction hack1;
sleep 5;
playmusic "LeadTrack02_F_Mark";
Hint "* Gained Access * Collecting Data";
" *****TOP SECRET INTEL*****" HintC ["1","1","1"];
},"BIS_fnc_spawn",true,true] call BIS_fnc_MP;
}];
},"BIS_fnc_spawn",true,true] spawn BIS_fnc_MP;
};
Take JShocks solution, I was thinking, you want to play the hint on every Client (don't know why i was thinking that)