Is There a way to play the track selected from lime wire basic before you download

no, streaming a file is currently not possible... hopefully latter in the future as the upload bandwidth of users increase, we may see this feature , and hooefully dialup will be gone for good... the dinosaur wont die! jeez, if evolution is a fact like scientists say it is (which i dont believe) then why hasnt dialup evolved? well... one would say it has.. i would say it hasnt because dialup is still around, evolution would mean that dialup would have to...morph into say adsl... the same way us humans "evolved" from monkeys but they are still around... lmao

umm anyways, you must download the file first before you can do anything with it.

Streaming

Streaming media is media that is consumed (read, heard, viewed) while it is being delivered.

http://en.wikipedia.org/wiki/Streaming_media

I.e. you listen the music while your download it. You're maybe not saving the data to Disk but it is still plain downloading.

Anyway, "play the track ... before you download" is an paradox. How can you listen something that you haven't downloaded yet?!

http://en.wikipedia.org/wiki/Time_paradox
http://en.wikipedia.org/wiki/Grandfather_paradox