I'm using directshow so don't think it's a QT issue. but after closer inspection, all the missing files do seem to be m4a files after all. Here are some more which won't import:
M:\music\koen\lossless rips\aac\Bruce Springsteen\18 Tracks\07.I Wanna Be With You.m4a
M:\music\koen\lossless rips\aac\Beatles, the\Anthology 3 (Disc 1)\02.Happiness Is A Warm Gun.m4a
M:\music\koen\lossless rips\aac\Beatles, the\Anthology 3 (Disc 2)\21.Let It Be.m4a
And here is an album on which tracks 1, 2, 10,11,12,13 and 14 won't import.
M:\music\koen\lossless rips\aac\Breeders, The\Last Splash>dir /b
1. New Year.m4a
10. Divine Hammer.m4a
11. S.O.S..m4a
12. Hag.m4a
13. Saints.m4a
14. Drivin' On.m4a
15. Roi (Reprise).m4a
2. Cannonball.m4a
3. Invisible Man.m4a
4. No Aloha.m4a
5. Roi.m4a
6. Do You Love Me Now_.m4a
8. I Just Wanna Get Along.m4a
9. Mad Lucas.m4a
folder.jpg
7. Flipside.m4a
All these files play ok in another player.
Anyway, I tried renaming the file (sparks - this town is big enough for the both of us) to a shorter name and it imported. Then, I tried renaming it to a
longer filename and it also imported!
So, somehow it seems that MC thinks it already has this file in its library (even though it does not). This is really annoying, since I can trace the missing files with the 'incomplete albums' function but what about files which were not in an album?
[Edit]
To make this even more strange, after renaming the file once again to its original name (which wouldn't import) it does import correctly.