[Spillages]

My car stereo only supports these formats

AAC/MP3/WMA/WAV

http://www.kenwood.com/cs/ce/audiofile/index.php?lang=english&model=KIV-BT900

What would you guys recommend I format my media files as?
Sent from my Galaxy Nexus using Tapatalk

 

[Head Injury]

It doesn't matter, as long as it's high bit rate. If WMA includes lossless WMA, that would be better than WAV for size. The others aren't likely going to make any audible difference at high bit rates, and will be even smaller.