New to linux

[Graham Fry]

I am installing SuSE 7.2 I have gone to the down load site and found two
posible down loads I am down loading both
gnucash-1.6.1-1.i386.rpm 483kb on the sit it is alot bigger
gnucash-1.6.1-1.src.rpm  483kb on the sit it is alot bigger

why are they so much smaller than what the sit indicates and now what do I
do

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