.ogg Music Files not loading?

[MegaMario]

 So I clipped some songs to small .ogg files. I made 5 of them, each in the same way in Audacity: split the track to mono and export it as an .ogg. The list of the .oggs is ordered here respectively:
1. Ocean.ogg
2. Ocean2.ogg
3. Ebony Coast.ogg
4. Kokiri Forest.ogg
5. Sporty-O: Let Me Hit It.ogg
Despite all of these being made in the exact same manner, only Ocean.ogg and Ocean2.ogg show up, while none of the others show up on the list. I've been doing research but can't find a solution to the problem.
Can anybody help me? Is so,  .

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[The Resonte!]

What size are the music files?

I believe that the max size is 1 MB or so?

[MegaMario]

What size are the music files?

I believe that the max size is 1 MB or so?

Each is way below 1 MB (about 300 KB each).

[K3k0m@n]

You need to replace spaces with _'s

[MegaMario]

You need to replace spaces with _'s

Oh. Whoops, didn't try that. I'll do that now.

[MegaMario]

Oh. Whoops, didn't try that. I'll do that now.

That did it! Thanks!