Source Code

Certain components of doubleTwist are available under an open source license.

Download source code for Mac components
Download source code for Windows components
Download source code for WinRT components

doubleTwist AirPlay Recorder uses the following Open Source components:

Apple Lossless Decoder
        Copyright (c) 2011 Apple Inc. All rights reserved.

        Licensed under the Apache License, Version 2.0 (the "License");
        you may not use this file except in compliance with the License.
        You may obtain a copy of the License at

            http://www.apache.org/licenses/LICENSE-2.0

        Unless required by applicable law or agreed to in writing, software
        distributed under the License is distributed on an "AS IS" BASIS,
        WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
        See the License for the specific language governing permissions and
        limitations under the License.
        
mDNSCore
        Copyright (c) 2002-2012 Apple Computer, Inc. All rights reserved.

        Licensed under the Apache License, Version 2.0 (the "License");
        you may not use this file except in compliance with the License.
        You may obtain a copy of the License at

            http://www.apache.org/licenses/LICENSE-2.0

        Unless required by applicable law or agreed to in writing, software
        distributed under the License is distributed on an "AS IS" BASIS,
        WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
        See the License for the specific language governing permissions and
        limitations under the License.
        
FDK AAC
        Software License for The Fraunhofer FDK AAC Codec Library for Android

        © Copyright  1995 - 2012 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
            All rights reserved.

        1.    INTRODUCTION
        The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
        the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
        This FDK AAC Codec software is intended to be used on a wide variety of Android devices.

        AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
        audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
        independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
        of the MPEG specifications.

        Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
        may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
        individually for the purpose of encoding or decoding bit streams in products that are compliant with
        the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
        these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
        software may already be covered under those patent licenses when it is used for those licensed purposes only.

        Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
        are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
        applications information and documentation.

        2.    COPYRIGHT LICENSE

        Redistribution and use in source and binary forms, with or without modification, are permitted without
        payment of copyright license fees provided that you satisfy the following conditions:

        You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
        your modifications thereto in source code form.

        You must retain the complete text of this software license in the documentation and/or other materials
        provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
        You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
        modifications thereto to recipients of copies in binary form.

        The name of Fraunhofer may not be used to endorse or promote products derived from this library without
        prior written permission.

        You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
        software or your modifications thereto.

        Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
        and the date of any change. For modified versions of the FDK AAC Codec, the term
        "Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
        "Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."

        3.    NO PATENT LICENSE

        NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
        ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
        respect to this software.

        You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
        by appropriate patent licenses.

        4.    DISCLAIMER

        This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
        "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
        of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
        CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
        including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
        or business interruption, however caused and on any theory of liability, whether in contract, strict
        liability, or tort (including negligence), arising in any way out of the use of this software, even if
        advised of the possibility of such damage.

        5.    CONTACT INFORMATION

        Fraunhofer Institute for Integrated Circuits IIS
        Attention: Audio and Multimedia Departments - FDK AAC LL
        Am Wolfsmantel 33
        91058 Erlangen, Germany

        www.iis.fraunhofer.de/amm
        amm-info@iis.fraunhofer.de
        

We're here and ready to help you with doubleTwist Music Player. Visit our help pages or get support.

doubleTwist is a small Austin, Texas based company! Want to meet the team?