So i bought a stereo about 9 months ago. I have gone to my feedback to find when I bought it as I wish to buy another one from the same seller. But now none of my feedback has a description. SO what do I do now.

In addition to LOTB and D*G's advice, you can also go into your PayPal account (if you bought it using PP) and search Purchases with the date range of around 9 months ago. It should show a number or transactions and the stereo should be listed in there, with the seller's name listed under "Seller's ID."