Instruct: Classify the given review into positive or negative sentiment.
Query: disc unfriendly to mac computers

This CD (disc, case, book) is in great shape and I love the album. However, the disc does not play or even function on MacBook laptops. I do not know why although I have heard of this before vaguely. I can play the disc on my dvd player but the sound is not as good. I will have to burn a usable CD of this album from my roomates computer. I didn't want to return it because it wasn't expensive and I like the music. However, I will not buy from this seller again. I did not see anything on their description about not being able to use the CD on Macs. Their products are not very useful to me.Thank you.