Hi Jpod,
I'm using Apple Lossless for my Logitech Duet system and it does a great job. All our optical software readers can be affected from damaged discs and even new discs can have surface problems at a microsopic level causing jitter. I have found that using a product called MICROSMOOTH can have beneficial effects on all discs. I even use it on the Blueray and DVD discs I rent from Netflix that were unreadable and terribly scratched. It may even work on your Bolero. It is available from mapleshaderecords dot com. Good Luck and Happy Listening.