Dear Caridad
Thanks for your reply but upon re-reading my question, I don't think I phrased it correctly. I already have that order selected as random which does indeed display the results in a random order. However, what I actually need to be sorted in a descending order are the actual items contained within the select dropdown box of the filter control itself. So if my filter select box displays "Apples, Bananas, Grapes" as a choice, I need to be able to get it to display "Grapes, Bananas, Apples".
Do you think this is currently possible by way of editing the html properties of the edit filter html section? I have tried by looking up the API for filter select, but it only seems to be able to sort auto-filled items and not items from a particular custom taxonomy.
Any ideas? It sounds trivial I know, but I do have a particular reason for needing to do it this way!
thanks