I am in the process of scanning literally thousands of paper files, some in excess of 500 pages. Today I started on the second batch, saving them as *.pdf files as I did the first batch.

For some reason, Vista thinks the files are audio files, not *.pdf files (see attached picture. Names are greyed out for privacy.)

What is causing this? How do I fix it? I need to be able to sort the file on-screen by date entered.

tanstaafl.