Talia's basically been doing three interesting things lately: standing up (with support; she's trying to do it hands-free, though), eating a ton, and making a lot of noise. You can see her do all three in this four-and-a-half-minute video. (Nothing's wrong with your speakers -- there's hardly any sound, except when she pounds on the toy piano.) You can see her try to launch herself into the air from a sitting position. Her "piano playing" is so funny I started laughing while I was trying to film her; that strange noise coming from her is actually, we presume, laughter.
Oh, and yes, the dates in the video are wrong -- they should say Sept. 8, not Sept. 7. Oops.