Music stops after viewing mp4 files, anyone got a fix?

[cxincxilla]

So, whenever Im playing some smooth tunes in the background and groovin out and all, while going through video footage everything is good.

Except it aint cos the music just stops when the videos stop, so im sitting here flicking dicks and clips and between each clip its **bleep** silent and while i view em the music keeps playing wich is fine but not the silences inbetween man, no, no.

Also the songs are still playing just without sound, i pause and play again and wackadooda sounds back, what.

If anyone is reading this and has any ideas, i will be very happy, please bring me happiness.

Oh and im on a mac, maybe thats relevent. 

Thank you, have a good day ay

love you