This is about clicking on a streaming media link in Blazer and having it open in PTunes. The typical links have .m3u .pls .mp3 extension

When I click on .m3u or .pls link, it offers to either save it or open it with pTunes. When I choose to open with pTunes, I get to choose between Save and SAve-and-Open. What exactly gets saves, and where?

The reason I ask is that sometimes this handoff from Blazer to pTunes does not work smoothly amd the Treo locks up. I'd like to know what files are getting saved and where and if I can simply launch pTunes and open that file/link instead of having to load the page in Blazer and click on the link all over again...