Complying with the GPL below is mandatory.
It's not that difficult: just give proper credits 
to this sources and release your modified ones.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

Additional licenses informations about code used in this project
is available from within the App's "About" menu:

	Main Licenses 
 
This App is released under the GPL-3.0. 
(YouTubeDownloader for Android Copyright (C) 2012-2013 Samuele Rini) 
 
The FFmpeg binary (http://www.ffmpeg.org/index.html), 
used for the audio extraction feature, is released under the GPL-3.0. 
(FFmpeg version 2.0.1 Copyright (C) 2000-2013 the FFmpeg developers) 
 
The filechooser library is released under the MIT license. 
(android-filechooser Copyright (C) 2012 Hai Bison) 
 
The liblame library, used to compile FFmpeg, is released under the LGPL. 
A GitHub project, https://github.com/intervigilium/liblame, 
has been used to compile the lame libraries for Android. 
(liblame Copyright (C) 2010 Ethan Chen) 
(LAME Copyright (C) 1999-2007 The LAME Project, 
Copyright (C) 1999-2001 Mark Taylor, 
Copyright (C) 1998 Micheal Cheng) 
(mpglib Copyright (C) 1995-1997 Michael Hipp) 
 
YTD`s mp3 tags are written with MyID3: a Java ID3 Tag Library 
(http://www.fightingquaker.com/myid3 and 
https://sites.google.com/site/eternalsandbox/myid3-for-android)
released under the Apache license, as its dependency Jakarta Regexp library. 
(MyID3 Copyright (C) 2008 Charles M. Chen, adapted for Android by Romulus Urakagi Ts`ai) 
 
Picasso: Image downloading and caching library
Copyright 2013 Square, Inc. - http://square.github.io/picasso/ 
 
Launcher and notification icons by Sam Plane: http://samplane123.deviantart.com/, 
released under the CC BY-NC-ND (http://creativecommons.org/licenses/by-nc-nd/3.0) 
 
Credits for the custom download manager to Hiroshi Matsunaga (matsuhiro): 
https://github.com/matsuhiro/AndroidDownloadManger (released "unlicensed"). 
 
 	Code excerpts Licenses 
 
Stack Overflow (http://stackoverflow.com), a question and answer site for programmers where
all the content is CC BY-SA 3.0 licensed (see http://creativecommons.org/licenses/by-sa/3.0) 
 
checkMD5(...) & calculateMD5(...): 
https://github.com/CyanogenMod/android_packages_apps_CMUpdater
Copyright (C) 2012 The CyanogenMod Project, licensed under the GNU GPLv2 license 
 
FfmpegController.java: GPL-3.0 - Copyright (C) 2009, Nathan Freitas, Orbot / The Guardian Project
http://openideals.com/guardian - https://github.com/guardianproject/android-ffmpeg-java 
 
Observer.java: reference - https://gist.github.com/shirou/659180 
 
SectionedAdapter.java: GPL-3.0
Copyright (C) 2008-2010 CommonsWare, LLC - portions Copyright (C) 2008 Jeffrey Sharkey 
 
Utils.getCpuInfo(): http://www.roman10.net/how-to-get-cpu-information-on-android/ - by Liu Feipeng 
 
Utils.scanMedia(...):
http://www.grokkingandroid.com/adding-files-to-androids-media-library-using-the-mediascanner/
by Wolfram Rittmeyer 
 
DashboardAdapter.java & DashboardListItem.java: 
code adapted from https://github.com/survivingwithandroid/Surviving-with-android/
by Francesco Azzola (JFrankie) 
 
Rhino.jar: open-source implementation of JavaScript written entirely in Java;
https://developer.mozilla.org/en-US/docs/Rhino - license: http://www.mozilla.org/MPL/2.0/ 
 
Javascript function `decryptSignature` from the Greasemonkey script 
http://userscripts.org/scripts/show/25105 (MIT License) - by Gantt 

 For more details, look for comments in YTD`s Java code. 
 
 	Translations 

For more info go to: 
www.getlocalization.com/ytdownloader 
forum.xda-developers.com/showthread.php?p=37708791

Note:
the device-framed screenshots in the project's directory have 
been generated with the "Device Frame Generator" Android App by 
Prateek Srivastava, available at 
<https://github.com/f2prateek/Device-Frame-Generator/>.
The generated artwork is released ander the "Creative Commons 
Attribution 3.0 Unported" license (CC BY).

 v3.0.2 - Oct 11 2013 
----------------------------------- 
[x] small fix 
 
 v3.0.1 - Oct 10 2013 
----------------------------------- 
[x] layout fix for API 14,15,16 
[x] other bug fixes 
 
 v3.0 - Oct 08 2013 
----------------------------------- 
[x] Dashboard for interaction 
 with downloaded video: 
 - show status/progress/speed 
 - click to: 
  ^ open video/audio file 
  ^ audio extraction/conversion 
 - long-click to manage files: 
  ^ copy 
  ^ move 
  ^ rename 
  ^ redownload 
  ^ remove 
  ^ delete 
  ^ pause/resume 
[x] Custom download manager 
 supporting: 
 - pause/resume 
 - YouTube link validation on 
 resume through different 
 networks and/or expire time 
[x] new translations: 
 - Slovak 
 - Slovenian 
 - Vietnamese 
 - Finnish 
 
 v2.7 - Aug 20 2013 
----------------------------------- 
[x] auto-patch experimental 
 signature changes 
[x] JB 4.3 target 
 
 v2.6.2 - Aug 08 2013 
----------------------------------- 
[x] experimental signature patch 
 
 v2.6.1 - Jul 26 2013 
----------------------------------- 
[x] option to show resolutions 
 into the video list 
[x] experimental signature patch 
 
 v2.6 - Jul 17 2013 
----------------------------------- 
[x] fix for exp. signature parsing 
[x] new translations: 
 - Arabic 
 - Danish 
 - Greek 
 
 v2.5.2 - Jul 14 2013 
----------------------------------- 
[x] auto-fetch gantt\'s script to 
 parse experimental signatures 
 
 v2.5.1 - Jul 12 2013 
----------------------------------- 
[x] experimantal signature patch 
 
 v2.5 - Jul 11 2013 
----------------------------------- 
[x] experimantal signature patch 
 (yes, again) 
[x] other small bugs fixed 
 
 v2.4 - Jul 02 2013 
----------------------------------- 
[x] new launcher and notification 
 icons by Sam Plane 
 
 v2.3.2 - Jun 28 2013 
----------------------------------- 
[x] small bugs fixed 
 
 v2.3.1 - Jun 27 2013 
----------------------------------- 
[x] experimantal signature patch 
 
 v2.3 - Jun 25 2013 
----------------------------------- 
[x] experimantal signature support 
 (thanks Gantt@userscripts.org) 
[x] other bug/stability fixes 
 
 v2.2 - May 12 2013 
----------------------------------- 
[x] fixed a bunch of BUUUUUGS !!! 
[x] handles direct link clicks 
 (use of Intent.ACTION_VIEW) 
 
 v2.1 - May 11 2013 
----------------------------------- 
[x] code optimizations 
[x] mediaScanner bug fix 
 (thanks Wolfram!) 
[x] new translations: 
 - Chinese (China) 
 - Chinese (Hong Kong) 
 
 v2.0.6 - May 09 2013 
----------------------------------- 
[x] dialog/toast when Downloads 
 system app is not found 
[x] Chinese (Taiwan) translation 
 
 v2.0.5 - May 09 2013 
----------------------------------- 
[x] bug fix (FC when Downloads 
 system app is not found)(3) 
 
 v2.0.4 - May 08 2013 
----------------------------------- 
[x] bug fix (FC when Downloads 
 system app is not found)(2) 
[x] Hungarian translation 
 
 v2.0.3 - May 08 2013 
----------------------------------- 
[x] bug fix (FC when Downloads 
 system app is not found) 
 
 v2.0.2 - May 07 2013 
----------------------------------- 
[x] bug fix 
 
 v2.0.1 - May 06 2013 
----------------------------------- 
[x] bug fix 
 
 v2.0 - May 06 2013 
----------------------------------- 
[x] audio extraction from 
 downloaded video with optional 
 conversion to mp3 (with FFmpeg) 
[x] PayPal donation menu 
[x] BugSense integration 
[x] on the fly language switch 
[x] fixed locale change to default 
[x] 3 new option on SSH: 
 - use other ConnectBot forks 
 - use link inside same LAN 
 - SSH-send to long-press menu 
[x] up-navigation for ativities 
[x] nice translators list 
[x] new translations: 
 - German 
 - Hebrew 
 - Polish (Poland) 
 - Portuguese (Brazil) 
 - Russian 
 - Spanish 
 - Western Farsi (Iran) 
 
 v1.9 - Mar 23 2013 
----------------------------------- 
[x] YT web page parsing improved 
[x] fixed notif. error when remove 
 downloads not yet started 
[x] 4K and 3D video support 
[x] re-organized menus 
[x] on the fly theme switch 
[x] progress bar for video list 
[x] option to enable logging 
[x] Korean translation 
 
 v1.8.2 - Mar 15 2013 
----------------------------------- 
[x] dark/light theme switcher 
[x] option to show all the file 
 sizes into the video list 
[x] French translation 
 
 v1.8.1 - Mar 14 2013 
----------------------------------- 
[x] notification bug fix 
 
 v1.8 - Mar 12 2013 
----------------------------------- 
[x] extSdCard support 
[x] long-press on video list item: 
 menu to copy/share link 
[x] auto update-check once a day 
[x] new notification icon 
[x] landscape orientation support 
[x] YT video thumbnail preview 
[x] entire row in v.list clickable 
[x] Turkish translation 
[x] Dutch translation 
 
 v1.7 - Mar 03 2012 
----------------------------------- 
[x] translations: 
 - Italian 
 - Portuguese (Portugal) 
[x] option to force the locale 
 
 v1.6 - Mar 01 2013 
----------------------------------- 
[x] own YTD notification bar 
[x] options for own and sys notif. 
[x] added some credits 
 
 v1.5.2 - Feb 25 2013 
----------------------------------- 
[x] better fix on bad video list 
[x] remove stop download on click 
[x] open DM on notif. bar click 
 (still not working in CM ROM) 
 
 v1.5.1 - Feb 24 2013 
----------------------------------- 
[x] fixed crash if no net is avail. 
[x] fixed crash on bad video list 
 
 v1.5 - Feb 22 2013 
----------------------------------- 
[x] online update check 
[x] option to fetch filesizes 
[x] stop download on click 
 (maybe not working in CM 10.1) 
[x] DownloadManager quick links 
[x] settings and DM overflow menu 
[x] reordered preferences 
[x] small fixes 
 
 v1.4 - Jan 29 2013 
----------------------------------- 
[x] licenses and code links 
[x] Share this App option 
 
 v1.3.1 - Jan 19 2013 
----------------------------------- 
[x] handle again http|https links 
 (thanks Reiner!) 
 
 v1.3 - Jan 18 2013 
----------------------------------- 
[x] share via mobile links support 
 
 v1.2 - Dec 25 2012 
----------------------------------- 
[x] fix for YouTube webpage changes 
 
 v1.1.1 - Dec 16 2012 
----------------------------------- 
[x] preferences fix 
 
 v1.1 - Dec 13 2012 
----------------------------------- 
[x] all text strings exported 
[x] preferences modification 
[x] quick start tutorial 
 
 v1.0.1 - Dec 11 2012 
----------------------------------- 
[x] bad typo fixed 
[x] file-chooser new folder icons 
 
 v1.0 - Dec 11 2012 
----------------------------------- 
[x] FIRST PUBLIC RELEASE 
[x] send download via SSH 
[x] JB compatibility 
[x] SSH send how-to dialog 
[x] standard download locations 
[x] file-chooser for download dest. 
[x] add quality suffix options 
[x] file renaming options

[ ] implement other FFmpeg functions
[ ] compile FFmpeg to support x86 Android ABI
[ ] option for automatic audio extraction after download
[ ] default format/filter selection for video download
[ ] use icon/logo to identify codecs available (expand the custom ShareActivity adapter)
[ ] make the App tablet friendly
[ ] handle SourceForge servers down; fallback on GitHub for apk download:
    page: https://github.com/dentex/ytdownloader
    file: https://github.com/dentex/ytdownloader/blob/master/dentex.youtube.downloader_v.*.apk?raw=true
[ ] use custom DM for other download tasks (apk update, ffmpeg binary [wip])
[ ] option to include downloaded videos into dashboard backup (or make menu entry "archive")

[x] Downloads running:
	- for a long time (around 20 or 30 minutes)
	AND 
	- without having the Dashboard Activity to the front
	may be forced to PAUSE. In this case a manual resume is needed