Yeh, definitely WAV bounces that were causing the problem...not 100% sure its the tempo tags that are messing things up, but it seems thats the only thing thats changed about the output file format between L8 and L9.. Maybe it was something else tho, as I cant find any other reports online of other people having any problem..
Interesting how metadata works tho, potentially really useful for all sorts of stuff, and got me thinking how else they are used and how they could be- I use appleloops a lot (converted from my own recycle files) to store and audition all my drum/percussion breaks then have them load up the corresponding EXS preset and MIDI pattern - really really useful feature, but quite poorly executed in terms of search functions etc - you're stuck with apple's options as far as categorising your loops/samples etc, and these are sorely lacking to say the least..(Acoustic/Electric, Cheerful/Dark etc lol). They are obviously using metadata tags to do this, but not sure what program you could use to view or edit the tags..? Dunno if anyone has any experience with this?.. Still cant seem to find a program that can do the job, beyond iTunes..