Rui K
9:59 PM - 21 November, 2013
Hi Martapitu,
Thanks for get in touch with us. I personally use free software Audacity to edit my recordings. Import your recordings to Audacity and select entire recording. Then go Effect > Normalize... > Click OK. It will automatically turn your waveform bigger (louder) to good levels.
Audacity is very easy to use and lots of tips on Youtube as well.
I hope this clears things up.
Kind Regards
Rui