Yes, they are trying it again.

Markup on the bill is happening today (Thursday June 22), so please call now! If your Senator is already taking the right position on the bill, you might want to call and thank them for that.

From EFF:

If this bill were to pass, government - and the entertainment industry - would control what you could do with digital media in your home. The broadcast flag would place TV shows in a DRM ghetto, where your right to copy, back-up, sell, time-shift or convert them into formats convenient to you would be at the whim of the broadcasters. The audio flag would give the FCC matching powers over "digital audio broadcasting," including satellite radio, digital HD radio, and potentially even Internet radio.

More information:

• Public Knowledge post with points you might want to make
• EFF Action Center for contacting your Senator
• EFF post with Senator phone numbers