We need to convert 1 hr long program with 16 tracks to 48K. Batch digitizing is not an option- -most of audio was digitized back in '99 from CDs, some from VHS that we have no access any longer. We're using 8.2 XS version.
One way is to re-import your audio media from the media folder using the import menu. Set your hardware settings to 48k, go to import in the File menu, click on your audio media, change the drop menu to "convert to 48K" and import away.
If the programme is finished though, it might be quicker to export the whole timeline's audio in one go and then re-import that as above. It would save time, but you won't be able to edit the individual tracks obviously.