hey there, of course! you can =) I did it for that, this pack is free (or you can donate whatever you want) because I wanted to help people who are in a budged but who want a great soundtrack! go ahead use it =) I am glad you like it, hey but dont forget to add me to the credits of your game! something like: "8 bit music pack - created by Rino Jose Tirri Suarez"
is fine ^^
and let me know when your game is finished to check it out =)