the progress bar does not move when playback media after playbacking Internet Radio

[Churchy Zheng]

the progress bar does not move when playback media after playbacking Internet Radio.

if playback internet radio and then switch to playback audio or video, the progress bar does not move,
the time counter does also not update, its value is always 0.

steps:
 1.launch moblin-media
 2.swithc playlist mode and select internet radio list
 3.doucle click a item to start playback from internet radio list
 4.then switch to audio or video mode
 5.select a audio or video to playback
 6.watch the progress bar and the time counter.

current result:
1. the time counter does not update.
2.progress bar does not move

expected result:
 the progress bar is moving forward with the time counter updating.

[JackZhu (jack-zhu)]

root cause: mediafile = mutagen.File(fileDir), mutagen.File doesn't support http yet, so can not get length info
totem does not support it too

[Bob Spencer (bob-spencer)]

The progress bar should be hidden for internet streams, or show "buffering" for known length.