Support for SermonSpeaker 3.x is canceled as it is for Joomla 1.5. I will gladly assist you with minor issues but I will not fix any bugs anymore in this releases.
The fix is to upgrade to SermonSpeaker 4.x, which is better anyway.
I'd like to simply type in the directory (location of the file) instead of uploading it through the front end, Because when I try to upload a 20mb file it simply does no go to the next step.
if i understood you correctly. you then would need some kind of FTP program to put the file on the server. and then use backend to input the location when you create new sermon. if you upgrade to 4.2 you would be able to upload on backend also.