You might be trying to download fakes, there are a lot around these days. Typically they're new releases/very popular with heaps of sources (up to 100), they'll sit connecting forever but never download. Search again, vary your search terms, try the All Types search. Stay away from files with huge numbers of sources, go for a file with 10 sources or less.
If you're looking for video, look up a file with Bitzi before download
How to use Bitzi