Hi Welcome!

For converters read: http://talk.maemo.org/showthread.php?t=88964

The last 2 pages have better info on the encoding settings.

Read/Search around threads in the N810 sub-forum and you should be able to get what you want. Addison is a member who is one of the few members still active in the N810 forums so you could contact him too in case of doubts.

Thank You.