Your best bet is to convert to MP3 or AAC first. iTunes will easily do this. Select the track and from the menu at top Advanced—> Create AAC version..
From there iTunes will burn a CD that will play in any CD player. Unfortunately you lose a little bit of quality going from WMA->AAC->AIFF.. But it isn’t a huge deal unless you are an audiophile. {tries to think of a way to insult audiophiles… Maybe later, I just woke up.}