...The wave file that I just recorded isn't that high in level compared to the other sounds on the instrument. Is it possible to adjust the recording level some way?

you need to 'normalize' the recording afterward. From memory, you have to import the wav file into the editor and then select normalize.

...when your Audya is "up to date" ( OS 4.2B ) you won´t need the laptop ( and software like audacity ) for normalizing. You can do it directly within the Audya