True, that is a possibility. I have a set in my place at school. I found that the audio quality was fine as long as the area in between wasn't crossed too often by bodies. Plus, for the distance from the floor to the ceiling, the signal probably won't get too weak, although we may get/cause interference between other offices.

Then comes the question:
if I got the version with RCA jacks, what kind of speakers do I use?
or
if I got the version with the wire terminals, how do I connect the other end to the PC soundcard?