looping through files in a given directory

[thenomad]

OS : Win XP pro
Problem : file concatenation using filename indexes

Some idiot chopped up an mp3 file into 99 pieces of all less than 1 minute long chunks. filenames are track## where ## is ranging between 01 and 99. What I am trying to accomplish is:

for i=1 to 99 step 5
for j=i+1 to i+4
  copy track(j)+track(j+1)+track(j+2)+track(j+3)+track(j+4)  supertrack(j)
continue
continue

I know this code is neither basic nor DOS but I am not proficient in either of these, so goes my question. Is there anyway that I can accomplish this using the command window running under WinXP pro ? If not, what would be a good basic code and where can I get my hands on a copy (freeware) of basic interpreter ?

Thanks for all your help.

[diablo416]

maybe try
type *.mp3 >>file.mp3

[thenomad]

maybe try
type *.mp3 >>file.mp3

if only it were so easy. I do not want to put all files back together. I like to add 5 small parts to make larger part but still want to have the original file divided into 20 pieces instead of 100 pieces.

I uploaded one directory to my linux webhost where I happen to have shell access, and cobbled up a script in less than 30 minutes to accomplish that. Looking for a DOS/Command only solution to save me the trouble of uploading and downloading files.