How to Download Video in Windows Mobile 6 (need Help)

[karankashyap]

Hi.
I m using HTC p3400i.
I found that skyfire (that is Browser for wm phones) taht brows like pc browser.
but if i use youtube to stream video on mobile it dint play it's sound.
so i think if i download that video in my phone and try to play with phone's player it should play sound also...
please give me some tips or trick to download that video.. in Skyfire.

or any other trick to download videos from these kind of videos site in htc p3400i

Thanks In Adddvance