Your link takes me to the soundclick log in screen, can you check your link and edit your post?
If you go to Band Administration, one of the options/links under "Songs" deals with MP3's playing too fast or slow. Maybe that's what's going on.....
Here is an excerpt from that:
Song Re-encode
Some HiFi streams play too slow or too fast
The issue with the "slow play" or "chipmunk" effect is due to the original encoding. If you used a sample rate other than 44.1kHz, your hifi song might be affected. To get rid of this error, you can do one of the following:
1: re-encode and re-upload yourself
The best solution is to re-encode your mp3s with a standard mp3 encoder and standard settings. Important: It's very important to use a sample rate of 44.1kHz (and NOT 48 kHz). Most of the times that's the default setting of the encoder anyway.
2: use the online tool below
You can use the links below to re-encode your mp3 right now on-the-fly. But in general that leads to a slightly degraded sound quality. So re-uploading is the preferred method.
To be on the safe side: please make sure you have the original mp3 file before you re-encode your mp3 from this page.
The bitrate and runtime below are displayed as we have it on file. If you want to re-check your songs' bitrate or runtime, please ......