Oh, one more thing:
>
> #!/usr/bin/python
> import pygst
> pygst.require("0.10")
> import gst
> import gobject
> import sys
>
The above isn't quite right. This is the proper way to initialize pygst:
#!/usr/bin/python
import gobject
gobject.threads_init()
import pygst
pygst.require("0.10")
import gst
.....