Anybody successfully renew their 3 month XM radio trial with a discount WINBACK code? I still have a month left of my 3 month trial and would like to extend my subscription for a year. I did get a letter in the mail this week asking me to pay $38.85 for 3 months which is more than I want to pay at this point. I've seen posts on other sites about $60 & $77 WINBACK promos but some of them might have expired. Suggestions?