How to increase sound of mp3

I have one .mid file

When I converted it to mp3 it has very low sound.............

Plz tell how to increase the sound of file

TIA
Sumit

You can use Audacity
You can use Sony sound forge
You can use Dbpoweramp music converter
you can use Nero Wave Editor

Thanks
Regards..
Expertno.1

I think u have to adjust the decibel level while encodin/editin ...

Thanks expert

Which one is the best expertno.1?

And which one has more Features?

Audacity is good and dbPoweramp is also very good !
The other two r paid and soundforge is advanced and nero is simple.

Which one is the best expertno.1?

And which one has more Features?

The best is the Award Winning "Sony Sound Forge" but its shareware

The best freeware is audacity

Thanks
Regards..
Expertno.1