Javazoom MP3SPI JDK version problem

Hi, I've been trying to solve this mysterious mp3 playback problem in the Javazoom mp3 forums but so far I have not found the solution. Here's my story: So I downloaded Javazoom's MP3SPI 1.9.4 jar and extracted the top level folders (org, contrib, javazoom, etc.) and put them in my classpath. That's the first issue I'm confused over. Shouldn't you just be able to download the resource jar and put it in your classpath, and the compiler should be able to notice it and view the files and folders it contains without having to unextract the top level folders and taking them out? I'm using a number of third party Java resources and when I unextract the top level folders and import them in my source files everything works fine, except for Javazoom's mp3 package. It compiles fine, obviously finding the folders and classes within. Here's where my problem occurs: When I run the program using JDK 1.6 everything works fine, but when I run it using 1.5 and attempt to play an mp3 file (the exception always points me to the BasicPlayer class methods open() and and play(), which I have in that order. Like I said I don't have a problem with 1.6, it's 1.5 I'm having trouble with. So I've been trying to get advice from the Javazoom forum guy, but it takes him a while to respond and sometimes he just forgets about my thread as it gets older, and nobody else answers with anything helpful.

To get a better understanding of my problem, please take a moment to quickly read these 2 threads:
http://javazoom.com/services/forums/viewMessage.jsp?message=14681&thread=4733&forum=7&parent=-1
http://javazoom.com/services/forums/viewMessage.jsp?message=14483&thread=4626&forum=7&parent=-1

I know this problem has something to do with my setup because the Javazoom site says their software is compatible with 1.5 and earlier versions, and that nobody else is complaining about this issue, meaning it works fine for them. This is really specific question, especially since it's about something that isn't standard with Sun's provided Java software, but would anybody out there happen to have worked with the MP3SPI to enable Java apps to play mp3s? I need my program to be able to work on 1.5 because that is what my presentation laptop my school provides has installed, and I'm not allowed to change the version to 1.6 even though I have the folder, ie I'm forbidden to install anything on this laptop.

Thanks, and I'll appreciate any help anyone has to give!
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