I was originally using T10 with updates, on both machines, then recently due to misunderstanding what T10 Pro was offering I purchased the T10 Pro from apple which upgraded the operating install to T10.0.4.
This was insitu when I had to record these programs and did so successfully.
However I had also in the time installed some other small CD burn app's for trial and subsequently uninstalled them in the space between MP2 sessions.
Whether one of them altered or removed a codec file I would have no idea as Clean App did not indicate the existence of such a Common file.
I note that Quicktime X (which I presume you refer to as "8") Has No Independant or for that matter Any, Preference Settings. ??? Certainly none that I can find access too??
I have also found that several Mac file converters recommended such as Switch, etc won't recognise the files either. Dispite the Pgm providers recommendations.
However I have discovered that my preferred Wave Editor " Amadeus Pro" will do a speedy batch conversion to MP3 192Kbps, either SubFolder by SubFolder or probably the whole Program File Folder in sequence.
I have played one or two MP3's in T10.0.8 and there appears to be no loss of quality .. I have only used Amadeus Pro for Audio Editing, so I'm quite impressed to find this feature as a complement to T10.
Both versions of Quicktime have been on these units since QT-X was released. In which case it must be something that has been caused by either a System/iDVD/iMovie or Other, upgrade or update file in the last few weeks.
iTunes will recognise & load the files in a Playlist however I haven't recorded as I am short of CD's.for the moment. T10 is far more convenient. The O/Source "Burn" App has to be closed after every burn as it crashes if you try to delete the previous CD's files and import the next two or three and change the Disk Title. A nuisance when you are recording six or eight different CD's.
Amadeus Pro will enable me to cope with the problem until the Pgm provider starts uploading MP3 to their server, as I've run most of the downloaded programs up till May 9th into MP3, this evening, ready to burn when required.
Still raises the question as to what has happened in these few weeks. As several other "not cheap" CD Burning programs, will not recognise MP2 files either. ??