I can't find autorun on/off Win. Media Plyr, plz help

I was over at my Mom's, and I checked the box to autoplay music cds in Windows Media Player. Its version 10 I think. Anyway she got nuts on me and wants me to change it back. The trouble is, I don't know where to. I thought I was helping her, but as it turns out, because I did it without asking her, she got mad. Even for a 38 year old, I got scolded good!
Can anybody help me on this? God, I hope it isn't right under my nose.
Thanks, Will

See if this works. Right click on your cd drive, select Autoplay, Choose music CD and select take no action.

Thanks, that looks like it. I'm gonna call my Mom and walk her thru that, maybe it will put her mind at ease.

Will