How do i make loops from .caf files.

Hello Cakewalk Users,
 
i have loads of .caf audio files (only recognised by Mac) in my sound library and i would like to convert them to another audio file so that Sonar is able to read, play, and most important treat them like groove clips. However, i am not sure what format should i convert them into. If i were to use an audio converter software, what audio properties should i set? Sample rate? Bit depth? Mono/ Stereo?
 
 
Please advice. thanks.