I am not a lawyer, however I can let you know that the textual content you copied:
Underneath CC licenses, synching music in timed relation with a transferring picture is all the time thought of an adaptation
Is from an FAQ. And I am to not assume FAQs are legally binding. As an alternative we should always take a look at the precise textual content of the license, we discover this:
For functions of this Public License, the place the Licensed Materials is a musical work, efficiency, or sound recording, Tailored Materials is all the time produced the place the Licensed Materials is synched in timed relation with a transferring picture.
After all, I like to recommend you to substantiate this with a lawyer as a substitute of trusting some random particular person from the web (me, on this case).
So, if the “musical work, efficiency, or sound recording” is the music you bought, the primary query is that if “transferring picture” can cowl video video games (or a few of them). I feel the reply can differ from jurisdiction to jurisdiction.
Now, allow us to assume it does apply to video video games. Whereas the concept you should use music in video video games with out having something timed in relation with it is sensible (to the purpose that I had not thought of if this was a problem earlier than)… The outline – once more in my view – appears too obscure (for instance: if I begin the background music in the beginning of a stage, does that rely as being timed in relation to the music?).
Such vagueness might be resolved in favor of the consumer of the license… However, you understand, if the proprietor of the mental property is just too litigious they could ship a stop and desist your method even when they do not have a respectable case, and if you wish to battle it, you desire a lawyer.
From my expertise, consulting a lawyer would not damage. So, I might say seek the advice of a lawyer specialised on mental property. If you cannot discover a agency or lawyer straight, see if universities in your space or your authorities have such service.
In my case, I consulted through a authorities service (sluggish however free and efficient) and the advice I obtained from the legal professionals was to get a license particularly to be used in video video games as a substitute of utilizing a generic license that was unclear if it applies.
The scenario is likely to be totally different in your jurisdiction (or in mine sooner or later as legislation modifications).