I was able to post the above list so quickly because I already had it in a text file in my hard drive  I've been meaning to get around to updating the sound list for some time now. 
As far as generating interest  I've spent four years trying to drum up more interest in freely licensed full length classical music. Unfortunately, my attempts failed - I'm still effectively the only one who does it. The classical music wikiproject was not interested, (Wikipedia_talk:WikiProject_Classical_music/Archive_5#Need_help.21Wikipedia_talk:WikiProject_Music/Archive_3#I_could_use_some_helpWikipedia_talk:WikiProject_Music/Archive_2#Raulbot.2C_and_the_music_list) So I really had given up trying to interest others.  
The sound list was featured on digg a while back - http://digg.com/music/Wikipedia_has_free_classical_music_downloads . It got 1600 diggs, which is IMO very impressive.