I’ve found a pirate version for Audacity so I’m transferring over to that program.
I have the option of exporting from Garage Band in Wave, MP3, AIFF, or AAC.
Uncompressed audio format
Common in PCS
Waveform Audio File Format (WAVE, or more commonly known as WAV due to its filename extension – both pronounced “wave”) (rarely, Audio for Windows) is a Microsoft and IBM audio file format standard for storing an audio bitstream on PCs. It is an application of the Resource Interchange File Format (RIFF) bitstream format method for storing data in “chunks”, and thus is also close to the 8SVX and the AIFF format used on Amiga and Macintosh computers, respectively. It is the main format used on Windows systems for raw and typically uncompressed audio.
Commonly used for storing uncompressed (PCM), CD-quality sound files, which means that they can be large in size—around 10 MB per minute. Wave files can also contain data encoded with a variety of (lossy) codecs to reduce the file size (for example the GSM or MP3 formats).
-Uncompressed audio format
-Could be considered the Apple equivalent of wav.
Formats with lossy compression.
Looks like AIFF is the right format for my uses.