Just a reminder that "I'm With the Chili Peppers Pack" and each song in it will be removed by the 16th! If the distributors haven't taken it down already, grab it before it's gone...forever.
May I suggest color coding or putting asterisks on songs that you can still get through other means -- such as tracks packs or codes?
Just to let you know I haven't been ignoring this request. I saw this a while back and I do plan on implementing a color-coding system once I get around to it (school started up last month and it's been crazy).
If you'd like to help compile a list of other means to still (legally) obtain removed DLC songs, I'd be glad to add it to the OP when I get a chance. It'll be faster than waiting for me to find time/remember.