how do I include the year and the genre when downloading from JEmplode?

Again, something that's always worked for me in older versions of Jemplode, no problem. They're just fields just like everything else.

The real problems come up when you:

(a) have characters in your fields that don't work in file names, such as / or ?, or

(b) you use a field delimiter that exists in your fields, such as:
{Genre} - {Artist} - {Album} ({Year}) - {tracknr:2} - {title}{ext}
but you have a genre, artist, or album with " - " in their name.

That's why file naming conventions are only part of the solution. What we really need, from both emplode and Jemplode, is full proper V1/V2 tag rewriting on download.