This has happened to me several times today, so i thought i should report it
i can't tell when it happens (ie- what I'm doing to make it happen), but once in a while, as I'm cycling through songs, I notice there'll be a song in the task window that says:
Fill Ring buffer: Audio Out
[song name]
like this...

and they just sit there... tasking away, but never resolving anything... it doesn't interfere with an operation except for when I go to close kjams, kjams brings up a box that says "abort song importers and zip tasks" but just sits and thinks... no response...i eventually have to force quit it
So then, in anticipation of this happening again, I've also tried clicking the stop signs, next to the "Fill Ring..."
it gets rid of the stop signs, but otherwise same outcome

this is what the "abort song importers..." looks like (stop signs clicked):

hope it makes sense
pietro
One thing, I dunno if it matters, I'm cycling through songs without hitting stop ever, just double clicking a different song... I mention this because I not a get a spooler error message once in a while when I try to cycle through songs too quickly... maybe this is contributing to my problem