Total Commander

I have searched for "default directory for download" and fiddled around with the connection and the "Downloaded Files", but the latter only displays the directory where the downloaded files will go to. I would like to know if there is any way of changing this from "/storage/emulated/0" to a path on my SD card, e.g. "/storage/extSdCard/mp3"

Do you mean the directory for "Download and open" or "Download and edit"? Unfortunately this cannot currently be changed. You need to download the files regularly: Set the target location in the other panel, then use the "Copy" button (second from the left at the bottom) to download the files.