Hmm I use it constantly and it works fine for me.
From your error message I don't think its a problem with JDIC or even the download process, its just that it can't write data (mp3) into a temporary file on your disk.
Is it possible that "temporarySoundFile.mp3" in your decks media folder is used by some other program (like other Anki instance) or it has some properties set (like read only, system or things like that)?
You can try to delete this file "temporarySoundFile.mp3" and see if it helps after you succeed.
I'll try to replicate this problem when I'm at home, thanks for pointing it out.
From your error message I don't think its a problem with JDIC or even the download process, its just that it can't write data (mp3) into a temporary file on your disk.
Is it possible that "temporarySoundFile.mp3" in your decks media folder is used by some other program (like other Anki instance) or it has some properties set (like read only, system or things like that)?
You can try to delete this file "temporarySoundFile.mp3" and see if it helps after you succeed.
I'll try to replicate this problem when I'm at home, thanks for pointing it out.