FreeGameDev

Julius {l Wrote}:What about licensing issues? Is it even legally possible to used in combination with a CC-By-SA mesh?

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You may not offer or impose any terms on the Work that restrict the terms of this License or the ability of the recipient of the Work to exercise the rights granted to that recipient under the terms of the License.
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This Section 4(a) applies to the Work as incorporated in a Collection, but this does not require the Collection apart from the Work itself to be made subject to the terms of this License
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2.4 License to Animation Data; Distribution of Embedded Animation Data.
User may download the Animation Data for the sole purpose of embedding the selected Animation Data in an animated application prepared by User as a result of using the Services.
User may make modifications to the Animation Data solely as a part of preparing the Embedded Animation Data.
User agrees that the standalone Animation Data may not be resold, published, or distributed to third parties.
Provided User has purchased a particular Animation Data clip, User may reproduce and distribute such Animation Data clip only as Embedded Animation Data embedded in User’s creative animated work to customers without any obligation to pay royalties to Mixamo, and provided User is in compliance with the terms and conditions of this Agreement.
User agrees that (a) all copies of the Animation Data contain the Mixamo proprietary notices, and (b) it will distribute its applications and products for which Embedded Animation Data has been embedded pursuant to a commercially reasonable end-user license agreement containing terms and conditions commensurate with industry norms.
User’s license to use and distribute Animated Data is limited to Embedded Animated Data.
Redistribution, or republication or commercialization of Animated Data that is not Embedded Animated Data is prohibited.
For example, approved distribution or use of Animated Data as Embedded Animated Data includes, but is not limited to: (i) as rendered moving images; resold as part of a feature film or broadcast or otherwise used in demonstration or marketing materials, and (ii) as part of a game if the Embedded Animated Data is contained inside a proprietary format and displays inside the game during play.
Notwithstanding the generality of the foregoing, Users that have obtained access to the Website pursuant to the terms of a standard education license, as opposed to an education+ license, between Mixamo and an educational institution (each a “Standard Educational License”) with which such user is affiliated (each a “Standard Educational User”) agree that such Standard Educational License access is granted for educational purposes only and not for commercial purposes.
Accordingly, Standard Educational Users shall not directly or indirectly license or distribute on a commercial basis any creative animated works containing Embedded Animation Data downloaded by such Standard Educational User pursuant to an Standard Educational License
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