hey im kinda new to guitar and have found that sometimes when i stretch my fingers (two are double jointed) they dont make a sound on the string if i strum and if i do, it sounds all off tune.

is it possible to actually play properly with double-jointed fingers?
There's no such thing as being "double-jointed." If the sound isn't good, then you're missing the strings.

Also, guitar questions don't go here, try the guitar forum or guitar basics.
its would be a pressure thing, if your hitting the string, your not pressing hard enough.

even then, ya guitar might be out of tune?? who knows

but yes, wrong section duder.
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