Thanks Andreas, as it happens I think I've reached a point where I can show what I've done.
The functionality is modelled on that of my Humax digital-tv Personal Video Recorder rather than an MP3 player, because I really use it for Mp3 "podcast" downloads.
I did things like louder/softer button repetition (with configurable repeat rate) more as an exercise than essential. Similarly fast-forward and rewind.
If anyone can tell me why the track-bar tick-marks don't show up I'd be grateful.
Maybe this rates as a separate shared creations thread; I'll take advice on that. If there's enough interest I might write it up.
Attached: "MusicPlayer" code. I've had to omit fmod.dll and fmodce.dll.
Mike.