I'm having same problem with SoundJam, QT, and Limewire playing nice together.

Here's what happens:
When I start to download from LW, all is good, and a file of type Soundjam apears in the "Incomplete downloads" folder. If I doubleclick this file, it plays perfectly in Soundjam, no intermediate steps.

However, when the file finishes downloading, LW moves it from the "Incomplete" folder to the "Shared" folder, or wherever you designate (I made a new folder for this purpose called "Recent Downloads". As soon as LW moves the file to this completed folder, the Soundjam file type is lost, and I can't play the MP3 without dragging it onto a player of some sort.

Because this happens when the file is moved, I suspect it's a LW problem? Help!