keff Hi keff, I just listened to your recordings in the MR forum. All of them are way too faint. I must crank up my loudspeaker to have a reasonable volume.
You said, you have audacity? Make use of the normalize functionality:
-1 db just says, make it as loud as possible, but leave 1 db reserve to avoid clipping and distortions.
Maybe you have a different version of audacity, then it is called something like volume-normalize, or even stuck in a sub-menu like "volume" or "volume and compression". Just search for something with normalize in the effect menu.