I've been using the playlist feature on a few sites I've been working on. I stumbled on an issue regarding the playlist in views (not the views bonus pack playlist, but rather the one included in audio, I know there's been confusion with that before).

when using the playlist view to be done through the xspf player, no audio files will show up in the player, and it states "undefined". This is with clean urls off, when I turn clean urls on, the tracks show up.

I'm not sure if this can be fixed other than making sure clean urls are enabled, as I'm not that good with code. It might be an issue if some servers aren't configured to have clean urls..