You could use an ini file. it just like a txt file but its is seperated by groups and Items. So you could have an A group and then the 1000 2000 and so on just use a get Item value this.
it would be something like
Every ini.Itemvalue(A,1000) // these are the groups and the items in the group.
play A note
you would use the ini object to write your values at the start of the program or make a program to write the file for you and then make it global and read the values as you need them. I think this would be a much easier way to read in from a file and is exactly what you are looking for... Hope this helps.