I do all kinds of trading, all kinds of music, and all kinds of quality.  I have no real rules - if I have something you want, and you have things to trade, we can likely work out something.  I prefer to send audio as data dvd-rs, flac or whichever lossless source.  That's my only rule - NO lossy!  Dvd-rs can be sent as data discs, or as playable dvds.  I usually don't bother with artwork, but many of my titles have artwork within the data.  Enjoy yer day!