Thank for the reply, Achill3s.
I cannot find "Download Instead of Stream" in Preware.
The place I found it was in this thread.
Now here is something very interesting. If I tap on the link in OP's post, that .patch file downloaded. That is the only file in a few days I can download using the browser. However, the patch won't install when I used the file manager to install it. It showed the HTML results, instead.
The OP of the thread also offered to have the patch file emailed. So I did that and download the patch via email and then installed it. That install was successful.
After installing Download Instead of Stream, I can download mp3 files now.
However, I still cannot download any other file: .wav, .deb, .txt (it displays instead), .pdf, .zip, .rar, etc. The browser download engine does seem to have some issues.