Dude, so much AD here, why not clean them all?

Hello. sorry. forgot that, should've remembered.ripit4me, and imgburn to burn.it rips with no problems to my HD, just it hangs at 51% everytime.sony DL's. ive never had a problem with any of them until now, and i successfully burned a DL from this same stack of DL's all the way until now, to where im havin the problems.