I don't syream that much music. I've only worked with CDs and mp3s. I didn't check to see about any of the suggestions on the site. What I normally do, when looking for software, free or otherwise is search on CNET, Download.com. You can include "free "or just check them all out. But Google can be good by itself. I had an oddball .amr file from my smartphone I wanted to convert to .mp3. Bingo! Google, " Freestar AMR MP3 Converter".Might want to get it,btw - never know. Like I said though, CNET Download.com might be a good bet for the audio DRM issue.
I've use DVD shrink too, but for backing up newer flicks I'd check out DVD Fab. You can download their free HD decryper and in the process check out 30 day( watermarked) trial versions of their other stuff to see if you like any - the whole pack is way expensive even with the deals ,but you might want just one or two. The DVD copy is good( the free HD decrypter runs off that - you can just save to theDvd Fab folder on your PC, stopping short of burning it. I also have BD to DVD copy, since I don't have a Blue Ray burner. Also have DVD ripper, which is great for producing a digital version of any movie for any purpose on earth, just about. I use the " generic" output option - a high Q avi. compressed file.
Main thing about the HD Decrypter is, if you keep updated, they are more up with the latest protection algorithms. DVD shrink couldn't get one recent movie, but DVDFab did.