I am still convinced that this is no fault with Limewire. I Think these could be faulty files (possibly delibrately planted on the Network). I'm guessing that you are downloading modern popular tracks. I suggest searching for something from 20 years ago or so. select a file which has only 2 or 3 hosts at most. modem or Cable/DSL would be fine.... Modem hosts I tend to find are more careful about what they put out, and see how that works. Just don't get anything by the Chipmunks
Out of interest, If you listen to these fast songs, do they play all the way through or do they repeat every 20-30 reconds over and over?
Let us know how you get on.