what do you want to play the music/dvds on?.
You can create data/mp3 cds if the equipment supports the format, more songs will fit on the cd.
Also Ashampoo free burning app can create music dvds capable of playing on dvd players with wma/mp3 support,music data dvds for playing on pcs .
Alternatively try imgburn to build iso of the wav files you want and then burn the iso to dvd.
click here but will still depend on the capability of the equipment.