Yes I know of the search bar and have used it, but it didnt' seem to help too much.

Are there any good sites for downloading jam tracks where they give you what key the track is in? I don't want actual songs, just a few chords kinda thing. Preferably rock/funk/blues etc

Better idea: try to find the key yourself. The easiest way is to find the bass notes. Usually, the first chord indicates the key. Great ear-training! Good guesses are: E minor (G major), A minor (C major).

Good luck!