Well, I downloaded it just to have a look.
I'm hardly an expert at this, but since no one else has piped up (yet);
First, tracks would normally be recorded and saved in mono. Saving the individual tracks in stereo just burns up bandwidth when sending them to somebody for mixing.
Second, what was it recorded with? Sounds like a lot of tape hiss. Looking at the spectrum plot, I'd guess cassette tape.
Third, voxmain has a negative dc offset (equipment problems?). Also, step back from the mike, and use a pop shield. Hearing a lot of blowing air noises at the microphone. Eating the mike is normal practice when playing live, not in the studio.
Have you applied any EQ to any of these tracks? They all seem to have a hole at 3KHz.
If nothing more important comes along, might see if I can do a mix for you. Not that I've ever done anybody's but my own till now. Not promising anything now.
Amanda
EDIT: Just solo'd both guitar tracks.
First, get your guitar set up professionally. Lot of fret buzz.
Second, both tracks have what sounds like tape dropout. Time to buy a new cassette maybe?
But on a good note, the guitar playing itself is pretty good overall.
BTW, can't say that I've heard the original of this song.