Conduit for cables

Planning on picking up some electrical conduit this weekend to start running the video, audio, data, etc for the electronics. Hope I can fit 2 inch conduit in the ceiling with out a problem. I am pretty much decided to put a soffit around the whole basement main room so that will help me run conduit to the computer room also. Probably will need about 60 feet of conduit and a few corner sections by the time I finish up the runs, need one going from computer room to stereo location in main room, one from stereo location in main room to projector location, one from stereo location to the utility room and one from utility room to computer room. Might put one from projector to utility room also. The rest of the cables I think I will just run in the ceiling no conduit.