rename the array to $0-wavemon and the tabwrite to [tabwrite~ $0-wavemon]
.
The $0 (dollar zero) represents a unique number each time the abstraction is instantiated

500 refers to index 500 not 500ms. in the example the array size is 1000, so start half way, generally audio makes very large arrays, therefore a very large number is required

on windows and linux right mouse click brings up a menu for help, I'm not quite sure about macs (option click?)

This may work for missing filenames in an abstraction, if there is no symbol a bang is passed to the rejection outlet otherwise the symbol passes through

@RayManiac a bit remiss of me not to mention a minus frequency value will play in reverse.
better late than never

So, Purr Data has a dropdown list object. and very nice too!

Here is a vanilla effort using hsliders
its colourable - good
its width can be set - good
the list will eventually cause a scrollbar if it runs off the bottom of the patch but require another event to cause it - bad good
its list is not scrollable - bad
it can only list symbols - bad
it needs all 5 arguments to instantiate - bad
and worst of all it need a local copy of the abstraction to be edited with the name of the main patch - -bad bad

I wasn't going to upload this but its quiet here, so here it is, it might be useful
Cheers
Balwyn

droplist.zip

use tabread4~ with a soundfiler, array and phasor~
The output from soundfiler is the size of the audio file, the phasor~ multiplies this with a value between 0 and 1 to create an index for tabread4~ to play at the speed of the phasor~ frequency
play speed.zip

use deken to install the iemgui library to your externals directory you will also have to add iemgui to your startup preferences

@ddw_music is right!
@cfry I didn't read your question properly, you should turn your subpatch into an abstraction then each instance will have a unique feedback loop using the $0 prefix

this should work