I like the Wagon Wheel song. The audio quality sounds like it could be pretty poor (hard to say because I'm on my shitty laptop speakers) but the fundamentals are there. It's a cool tune. His vocals really need to be mastered properly - he has a good voice but he has trouble keeping his mouth close to the mic and sometimes the levels sound off.
Church of Level Track was ok, but not as good. It's a bit too cliche Jack Johnson sounding.
So in summary, technically speaking it could use some word but he's talented and writes some good tunes.
Edit - oh I see the title says cover songs, so he didn't write these? Still he has a good voice.