manually adding files to the audio search database

Some Musings talks were not accessible by the audio search page since they were not played since early 2007, and a listener requested. So, added them using dummy csv files dated 2007-01-01 and 02, with values entered by hand. Have to remember to

1. not have a semi-colon or CR-LF after the last entry
2. fill in the duration in minutes correctly
3. make sure there are no spaces in the download-filename.