In a word... NO!
Please, please do not send binary files to any newsgroup unless they are newsgroups specifically created for that purpose i.e. alt.binary.???
Sending image files can give some readers problems. Their OLR (off line reader) may not be able to read binary files. Or their ISP (internet service provider) may not allow newsgroups containing binary files as they take up a tooo much bandwidth. And, not everyone has free access to the Usenet so they see their 'phone bill increase uneccessarily, downloading files they do not want.
If you want people to see or hear something - new music, cover artwork, music you want help recognising - put it on a web site and post the address in the newsgroup. The vast majority of email users have web browsers, or at least a access to them, and can then decide for themselves if they want to download your file.