corrupt audio files ??

[mich]

Greetings every one, I am mich from NZ
I have a problem that shows up now and again,
I d/l a file of music which for example has 15 tracks but the d/l has come through as one track, so I edit with Wave Pad Editor,  so far so good.
When the tracks are burned to CD either Ashampoo or Windows Media Player things get messy in as much that the CD player stops at end of a track and will not go onto the next track, + the odd track won’t start.
I put this down to corrupt tracks am I right and is there a fix for this?
I should add the d/l is flac then converted to wav and split via wavepad