Singletary talks O-line, Sheets, Rossum

* * * Among the issues Singletary addressed in the 3-minute, 15-second segment . . . --Singletary said he is still looking at making changes on the offensive line. He said there's a "good chance" they'll make changes, but no decision has been made, yet. The team is not satisfied with the play of right guard Chilo Rachal. When asked if Tony Wragge was the candidate to replace Rachal in the starting lineup, Singletary said there are a "couple combinations," but they'll figure it out when they return to work after the bye week. --Backup QB Alex Smith got his first work with the 49ers' offense since training camp. Singletary said he wanted to give Smith some work while giving Shaun Hill time to recover. Hill is a "little sore" after taking numerous hits in the 49ers' loss to the Falcons on Sunday. (There has been no talk about making a change at QB.) **By the way, I spoke today to Alex Smith for a podcast. I'll proba...