If you own a MAC and downloaded or have acquired either FLAC (Free Lossless Audio Codec) or ALAC, MP4 AAC (Apple Lossless) music files and wish to convert them to WAV so you can then burn a DVD and play them in your PWT, there's an easy to use program that's free. It's called xACT and can be downloaded by going here:http://www.macupdate.com/info.php/id/14246/xact.
When burning a DVD with the appropriate WAV files, be sure and use the UDF burning system. If you're on a Mac, then it's easy, just drag the WAV files onto the DVD and click on burn. Mac's use the UDF format natively and will produce excellent results without any intermediary program.
If you are not using a Mac, we recommend NEROhttp://www.nero.com/enu/index.htmlas the DVD burning software of choice.