I don't know if you guys are aware of this one. Here is how to recreate the bug:
1. Start a new mix.
2. Add a track (no description) and save.
3. Add a description and save.
4. Now add a new track with a description and save.

The description from the first track gets wiped!

(do I get a badge :> )

The suggestion, was to collaborate with the guys from
http://www.papercdcase.com/
to make a similar app that converts everyone's carefully constructed descriptions/tracks/cover-art into pdf format

Okay, well, hope these helped!

-flarets