back up and trading, i also have a t1 line sound grade: a&a+= usually soundboards or really good audience sources. b&b+= most audience sources, may have minor flawes b-&c= muffled, low volume, heavy bass or treble, audience is louder than the music trading rules: 1:always use eac to extract 2:always burn dao 3:use bubble mailers 4: i use fujifilm and sony disk, but i'm not too concerned with media type. 5: always stay in contact.