aif file format

Hello, it's been a while since I was on this site. 

Anyways, I have this sorta old (2002) PC edutainment game called "Where's the Blanket, Charlie Brown?" and it uses AIF files as sound format.
Since I'm not sure if AIF files would get accepted, I'd rather ask this here instead of just sending them for approval without thinking.
If the AIF file format is not acceptable, should I open the each sound file in Audacity and then export them as a WAV?
Or are AIF files fine?

Thanks for the help!