I'm not sure what your intention was with this track. Its slightly confusing that you refer to it as a 'song' and mention the voice in the Soundcloud text, but there's no vocal. From that I can only assume that you were thinking about the track minus the vocal for sync use, and in that case here's my thoughts.
I sort of like the overall vibe, but In my opinion there are several things that make it less than an ideal choice for sync:
- its just 2 chords round and round all the way through with no breaks/edit points, so it doesn't offer a great deal for an editor to work with
- some of the components don't quite work together musically
- some elements occasionally poke out of the mix a bit much (e.g. the whistling)
- there's some looseness in the timing in places so the track loses its groove
- I can hear some distortion, as if the mix is too hot
- the fade ending is never recommended for sync usage
The bar is high for sync because libraries can obtain music from world class musicians and producers, and that makes it difficult for us mere mortals to compete. However, it is possible to compete with help or by developing the skills to do it yourself. This track as it stands will probably struggle to get past Taxi screeners or to get any traction with libraries. I could be wrong though, so see what opinions others offer.
On the other hand, if its a song for your own personal release and you're happy with it then it doesn't matter what anyone else thinks.