Hi puffudder,
Sorry, but you can't listen to tracks before you download them. The way it works is - you do a search for a track & then LW searches the network for that file... then when the results show up on your search page, those results are from other people who are sharing that file. There's no central server. So you have to download at least part of the file before you can hear it.
You can preview the file as you download it - wait til ~ 10 - 15% has been downloaded & then click the 'preview' button below the download pane. That way, you can have a listen to what you're downloading - check whether it's the right track & whether it sounds ok etc
Just in case you have more questions about LW, check out the
LimeWire User Guide and
Frequently Asked Questions
And there are more tips here:
How to find music