I can help with that Charlie as I have 1000's of PT3 STC tunes as well as adapted versions of Andy Rea's PTE and STC players which play the tunes automatically with out having to select them one at a time.
Let me know what you need and I will do my best to provide.
As for my compositions I will have to pass as I use and multi track the AY like a traditional instrument and not in a chiptune sense so unless you develop a player that can accommodate guitar drums and bass a well the AY then I'll have to pass on new compositions although a turbo TRACKER would be nice as at the moment I'm having to run two ZX81's with AY side by side into the desk.
As an example here is the player consisting of compositions by someone I really respect,AY composer the man from Krakow, Yerzmyey.
To use just load the file "JUK" then run. pressing the"N" key will advance the player by one song "P" goes back by one song.
Line 20 of the basic denotes playing time and can be altered to suit, I did this as a lot of AY stuff is just an endless loop and using this method allows a reasonable snapshot of each tune to be played.
The files are untitled because the player as it stands needs a simple S1 S2 S3... format and as I'm not skilled enough to make the player accommodate proper titles I simply renamed them to suit.
Should Yerz not want his work presented in this way I will happily remove and apologise in advance but I think my musical brother will be cool about it and approve.
Charlie if you feel this treads on your patch in some way I'll remove it as well.
Anyone trying the player in an emulator may be disappointed as most of them cannot hack Andy's programming wizardry and glitch badly, however a version of SZ-81 created and modified by Olofsen for myself, works just fine and as far as I'm aware is the only successful emulator to run Andy Rea's AY tracker program without glitching and to my ears has a spot on AY reproduction. Should any interest be shown in that I will contact Olofson and ask his permission to post his emulator fully implemented for AY use as per my own studio set-up.
One very final comment. should anyone desire a plethora of music files and use ZXpand file commander with their xpand please note the amount of files stored in any one folder is limited and doing as I did by dropping 2000 files into a folder meant that it just don't work and you have to drop out of file commander and load the old fashioned way.
Also if anyone wishes to learn how to turn the three AY channels of their tracker creations,for example,into three separate WAV files that can be manipulated and saved in a WAV editor like Audacity or want to add their own instruments to an AY track I can help with that as well.
ANNND BREATH!!

???????????????????????????PIINKEY$?????RND????????????????????????????????????????????????????????PI????????