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[Kinnikinnick0718]

I wanted to make a song, but when i tried to import a .wav file it sounded like this
https://mega.nz/#!g49SkCiZ!7xKxJ9Qfv5hJFx1129kSobrPqvCyfsN7ubMJnAuPb58
The first bass sample from 0:00-0:02 is the actual file itself (how it was intended to sound like), and at 0:03 is what the sample sounded like when I imported it to OpenMPT.

What's with the weird noise at the end?
btw, the file is 16-bit stereo

[Saga Musix]

It probably uses an unsupported codec (possibly IMA ADPCM, where stereo sample import is broken up to OpenMPT 1.25), is malformed in some way or is not actually a Wave file. Without looking at the file itself, it's impossible to tell.

[Kinnikinnick0718]

It probably uses an unsupported codec (possibly IMA ADPCM, where stereo sample import is broken up to OpenMPT 1.25), is malformed in some way or is not actually a Wave file. Without looking at the file itself, it's impossible to tell.

This is the file itself: https://mega.nz/#!lxEgkJ4A!3qkin2HSwPrKvDMKqeS8evZbAMmakA2_rfpvnAQLiqQ , sorry for late response

[Saga Musix]

It loads just fine in OpenMPT here. Can you maybe load it into an empty module and then upload that module?
The sample sounds pitched-down in your recording compared to the original file because you most likely loaded it into a MOD file. This is covered in the OpenMPT FAQ.
However, even after saving the MOD file the stereo sample should definitely not be split up into two consecutive samples in any of the current and not-so-current OpenMPT versions.