Adventures in using my palmOne Treo 600 as a portable audio player

I found a great article on the web-site of NormSoft Inc. (producers of the Pocket Tunes audio player), which gives excellent information and solutions for taking calls handsfree and using the PalmOne Treo 600 as a portable audio player. The article is titled "Why can't I use headphones with my Treo 600? The sound still comes out of the speaker, even with headphones plugged in!". In the explanation of the problem, it gives several very helpful links and ideas on hardware that is suitable for the Treo 600.

It definitely helps solving yesterday's difficulties. All that remains is to try out my Sony Ericsson P800 stereo handsfree set and/or acquire some additional hardware...