I was able to reproduce this issue in r7536 on Ubuntu 15.04 (so whatever it is, it's cross platform). I built a cattle breeder (plus a farm and well to keep it supplied) and increased the speed. When the oxen left the building they would sometimes moo and sometimes there would be loud static played.
Hi, and thanks for reporting this issue. :)
I was able to reproduce this issue in r7536 on Ubuntu 15.04 (so whatever it is, it's cross platform). I built a cattle breeder (plus a farm and well to keep it supplied) and increased the speed. When the oxen left the building they would sometimes moo and sometimes there would be loud static played.