This is Martin McCormick. I did try the stretch effect in sox and it does do a better job of smoothing out the transitions between samples than my relatively simple code I posted. The other nice thing about sox is that it handles wave and several other common file types so one can compress or expand about anything you want to. Sox is one of those true treasures in the open-source world. We should never forget all the intelligence and hard work that some folks are letting us use for free. We owe them a debt of gratitude and it is something to think about if anyone of us comes up with a brilliant application that is useful to many people. Anyway, thanks to all on the list for your help. Martin McCormick WB5AGZ Stillwater, OK OSU Information Technology Division Network Operations Group _______________________________________________ Blinux-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/blinux-list