Problem with Sound

I have SE K750.
I am new to this forum and i want to know how to increase the sound in my phone.
can anyone help me.
Thanks in advance.

look for acoustic drivers, download them and upload it to ur phone using xs++

There sure is a guide here on TopSony, look for it in Tutorials. And I recommend you the RaKisTa drivers. Seriously, they rock!

where can i find these drivers?
Tell me how can i upload these acoustic drivers to my phone.
I have converted my phone from k750>w800.
I got a problem with w800 main firmware.
its showing that update failed at block 291
and also from that day i cannot get the good quality from my cam
please help this out
thanks in advance

try with latest version of w800.
for customizing use xs++ v 3.1, use FSX button.
with customizing you can improve both your camera's quality and sound.

Download Acoustic drivers from Topsony Download Section.

For instructions how to upload drivers to your phone take a look at this:
XS++ 3.1 Guide-Flashing,Customizing,Recovering - Top Sony Forums

and this:
How to get access to Download Area? - Top Sony Forums