It is free and has the feature you are looking for. Install it and click on the "MP3 Audio Splicer" tab. It will accept OGG and output CHKN.
@barniello78
I would not recommend using a stolen dance XAF. IMVU has scans that notify pro devs when assets belonging to one of their products are reuploaded. You are better off deriving off of the dance and adding your song to it. Or, just using 2 products at the same time.
@ad_hawary
What is a "mid"?
@druid
PM me a copy of both your original copy and the final version you uploaded.
@druid
Did you redownload the CHKN and start fresh before running Index Randomizer version 4.5?
Once versions 4.3 or 4.4 break a CHKN, it can not be fixed. You have to start fresh.