What folder are playlists stored in on the Env-Touch?

I had to get my 3rd replacement phone in the last month and would like to know which folder in the phone's file system (I'll be using bitpim to back up and reinstall the folder) are the playlists stored?

I have a lot of them but when you get a new phone they disappear since they seem to be stored internally on the phone and not on the data card. 

The only way I know how to restore the playlists currently is to erase all of the music to which the playlists are attached and then try and remember which playlists used to be on the phone and adding all the music back which is a total pain.

Any help would be greatly appreciated.