I had a listen to "Terraplane Blues", very good playing and vocal performance in my opinion, that is a very difficult style to play. I also listened to "Rambling on my mind", again a good vocal but it sounded like your guitar was out of tune??

Also had a listen to "Dirt Road", very good!

I agree, you should re-record them. Easy these days to have almost studio quality results in the comfort of your own home, and not very expensive to setup either.