This forum has a cool facility; you (or only mods) can record soundfiles and post them in posts instead of having to record them by yourself, post them on your own site etc.
http://www.englishforums.com/ShowForum.aspx?ForumID=22
http://www.englishforums.com/ShowPost.aspx?PostID=11323
I don't know if you could copy this, and if it's even allowed, but it would be rather useful. Maybe only respectable, knowledgeable, native speakers should be given the power to use it, to prevent newbies abusing it, or non-native speakers like myself confusing noobs with false pronunciation and accent. Newbies could ask Mike or Admin personally to use it, if they want to have their pronunciation checked.