Yes but my car only plays audio cds
Which still begs the question, why change the format? If it only plays audio cd’s, then why change the format? If it can’t play MP3 files, it certainly won’t be able to play WMA files, which are a proprietary music file unique to Windows. Just set up a playlist of about 80 minutes duration containing the tracks you want, then, as Cougar and gfs said, ‘Burn disc’, which should give you a cd that will play on any CD player. CDR’s are disposable, just burn one and shove it into the player; it should play ok, if not, it’s coaster format, and you’ve wasted a few minutes and a few pence. It really shouldn’t make any difference what file format the original is on your computer; burning to disc should automatically make it playable on any CD player, making it a waste of your time changing the files from MP3 to WMA. 😀