Comment # 1 on bug 1069731 from Stanislav Brabec

I just tried the same on my Tumbleweed (current snapshot), and I cannot
reproduce:

mount error(115): Operation now in progress
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

(This error is correct, I do not have your music server.)

The message does not seem to come from mount. More probably, it comes from
mount.cifs.

Could you call the command with "strace -f" (strace has to be called as root)
and provide the log?