The Orioles' President of Baseball Operations, Andy MacPhail, has recently said that the O's will consider trades that are offered to them, but that they aren't the farm system for 29 other teams.
There are talks of several players possibly being on the move as the Orioles try to build a postseason caliber club.
Felix Pie could very likely be heading out of Baltimore now that the team has plenty of outfield depth. Danys Baez is another guy also likely leaving Charm City. Baez is having a terrific '09 season after missing all of 2008 with Tommy John surgery.
Veteran first base man Aubrey Huff could leave town if the right deal were offered, as Huff is a free agent next season and very unlikely to return.
All-Star closer George Sherrill and DH/OF Luuuuuke Scott have been mentioned as trade targets of other teams. The deal for those two would have to overwhelm MacPhail though as both are solid veterans that are under contractual obligation for the 2010 season.
The Orioles know better than any team how beneficial trades can be, so don't be surprised to see one or two occur.