Local tracks duplicates

[crilla]

hi everyone, hope you guys can help me.
I have uploaded a couple of local tracks (mp3 I have on my laptop) on spotify. Each track is like 4min long but, when uploaded onto spotify, each single track becomes 30min long, since the song is repeated like 7 times. 
Why is that? is there a way to solve this problem?

Many thanks in advance!
cris

[Peter__]

Does this happen with all tracks? Sounds like there might be something weird going on with the track metadata.

[crilla]

Yes, with all the tracks (although they're not too many, just about a dozen)...

[Peter__]

It might be worth running the files through something like mp3tag to see if that fixes it?

[crilla]

ok I shall try that!
Cheers!