As you can probably determine from my first post, I was away from this for about 20 years - a long time. When I started doing some serious listening to my system, I was obviously disappointed from what I heard. As such, I had not set any budget. I am working my way through all the usual questions - what are the weaknesses, what is needed to address those weaknesses, what are my options, what are the potential gains, and finally a personal decision, what is my level of commitment to make those changes. There have been some responses here giving me different options with different costs, which I appreciate.
To answer the question, my sources are a 50-50 mix of LPs and CDs. I also have a large number of digital downloads that I have never even played over my system - just listened thru a pair of Ultimate Ears earbuds.
I agree with the suggestion that I first need to do some listening at an audio store to help me with those decisions, and see what "moves" me. In the meantime, I plan to keep reading here including checking out the equipment being sold here. Again, thank you for all the great responses and offers for assistance. For someone who just jumped on here, you guys have treated me like an old friend.