Can't upload video from camera to computer

It could be that you need a video player on your computer that supports the audio codec used by Sony.
I suggest that you download and install VLC on your computer and use that to play your videos instead:
http://www.videolan.org/vlc/

The camera doesn't have a speaker. Download the clip, the sound should be there.

please visit this site(sony-mea.com) & you can down lode the required software

i was dissapointed that the sony dsc 707, 717 and one of the small pocket models similar to yours (cant remember model) would not support that. i even sent sony a letter explaining that some of my other cameras (like olympus) did do that .. they replied (surprise) that theirs did not .. i checked your model s700 and it doesnt look like it does either .. at least it doesnt mention it in the manual. on cameras that do support USB live video out, you have a choice in setup .. you can select that mode for the USB port ...

Try using a separate card reader to download your pictures to a folder you create on your desktop.

sonyesupport.com this will contain all the firmware uploads.

here u go pls rate me FIXYA for help

http://www.docs.sony.com/release/DSCS650_EN_ES.pdf

Sony DSC-S700 can record voice in video clips but you can listen sound of clip by exporting it to computer and playback there.
Camera has no built-in speaker to playback sound.

Able to record video but there is no sound on playback

try useing it on another computer you dont have to install sony software to use the camera on another computer if it dose work that tells you that its prob your USB port.