I found Pantea's Flute before the quest was given to me. Now she will not accept it from me, and it says I still need to go find it. What do I do now? Is this a glitch? I have the game on PC if that helps. I found a post about the lute in the same set of quests, but they just needed to get rid of the item while I need the item to complete the quest. So I don't think deleting it will help.
As for the console version (Xbox) i have still got the flute, drum and guitar (not sure of its real name) because i guess i picked them all up before the actual quest was initiated.
So i think in future references, just take a note on where they are, then get the quest active and then go and get them, because I've had to carry those items around all game and its rather annoying it taking up 10 weight for no reason.
So as far as finding a solution, i have none, just that get the quest active before picking the items up
hope this helps anyone else