Hi, great work!
Playback is not much improved to the other versions but the Downloadfunction works great. You have to set the path to a subfolder on a sdcard, as said before to make them work.
The downloadspeed (shown in the integrated downloadmanager) falls from ~300KB/sec to ~70 KB/sec after 30 seconds. But stays constant then. This is the problem why minitube cannot stream videos with higher bitrates. I think wifi has to be fixed first, before we can use this great app properly.
If someone is interested to have a look into the buffering part of the code it may be possible to adjust the settings, so that the videoprebuffer buffers more data beforehand to play the 10 minutes of a youtubevideo constantly.
Edit: Ah yes, you cannot fast forward with the progressbar and the volumecontrol does nothing, just like before.