Toshiba (4CH-VOUT) Sound Card "headphones beats" Questions

headphones in kinda automatically switches, but to use the speakers again you have to do it manually. Just hook up a cheap av receiver to your computer and use this headphone input instead. a 100$ 5.1

beats so the sounds goes out of time. I'm on Windows XP and I've an Intel Celeron processor (1.60GHz) with 0.99GB of RAM with plenty of space on my hard drive but I can't work out why this is occuring

...some crackling issues have developed at the same time). With the FA-66, the monitored sound through headphones is fine, and the sound going into the editing software is normal for about 20-30 seconds ...