We will have a custom soundtrack option.
We can't use stuff without the artist's/producer permission, and I'm pretty sure more than half those producers will be reluctant in giving us a license. Plus, we want to use this as an oportunity to showcase underground, less known artists. Plus we might have an original Cold Storage music...

Now about those bugs. I gotta ask Bruno about that because he was the one who ported the PC version to Mac. Maybe some files got lost in the way...