I got Creative TravelSound Notebook 500 speakers off ebay for abour 35.00 and they sound good for ones this size. i even put my mp3 player on them and not bad. Alot better then the ones on laptop m1210.
if i was you i would send that tv tuner back. I have the Fusion HDTV usb one on my desktop and dam is it nice. i use the beyond 4.3 software and it's great. and make HDTV down to dixix size for on the road.