Hey, no problem.
As for what may be wrong, my best guess would be that from the sound mine's making, the DVD may not be spinning smoothly. I don't want to sound like a dork, but for anyone who's taken physics or math, as the radius increases as the angular velocity remains constant, the outer velocity increases. When the laser has to move to the outer rim of the DVD, I'm guessing that the machine has to change its angular velocity to compensate. It's this change in angular velocity that must be causing problems for some odd reason. Too bad I don't know anything about the mechanics.
I just found out a better way to play those songs. While choosing the song, waiting for it to load, and playing it, just leave the top open, period. Well, this worked for me just now, and I don't know if it's foolproof yet.
EDIT: I'm starting to think that it has something to do with bad fliptop design since when the song loads without interference (the top), it works a lot better. I tried every song just now without the top, and they all work really well 100% of the time.
EDIT2: I just closed the lid just now and tried a few of those songs again. For some odd reason, they work now
