minim- extract all audio data from wav/mp3 at once

I'm trying to use processing to extract all the data from a wav or mp3 file at once.  similar to the getArray() method in minim, but I want to perform this on the entire audio file, not just the part loaded into the buffer.  This is not for a realtime audio application, so I'm not worried about speed, playback, or stuff like that, I just want to extract all the floats from the audio file into an array.

Is there something in minim or maybe some other library that can extract this data?

thanks in advance!

amanda