This is Pocket Tunes Deluxe (not Basic) 3.0.9.
This is not the newest version of Pocket Tunes (which is 3.1.3 as of 01/30/06), but the version I had (3.0.1, which is still available on torrentspy, btw) would not allow my Treo 650 to turn the screen off while playing mp3's.
I was unable to find 3.1.3 cracked or with a proper serial, but after many hours of searching I finally came across 3.0.9 with a proper serial that allows the screen to be turned off during music playback.
Many thanks to the group TBE for this release/serial.
If you encounter any problems, please post on www.torrentspy.com (search for "pocket tunes") and select the 3.0.9 result.
To install: Get the .prc onto your handheld. Load ptunes, enter serial. Viola!
You'll also want to install HifiSkin.pdb if you have a hi-res device (like the 650). Use HifiLowRes.pdb if you have a Treo 600. The stock skin is crap.
The plugins directory has .prc's to play .wav's and .ogg's.
Note: It may or may not be necessary to delete any other versions of ptunes beforehand.