http://bugs.winehq.org/show_bug.cgi?id=31194
--- Comment #6 from Rosanne DiMesio dimesio@earthlink.net 2012-07-11 21:17:52 CDT --- (In reply to comment #5)
It certainly should. I suppose there could be some weirdness if your main shell isn't bash (it invokes /bin/sh), but testing locally it works when used in an interactive shell (not sure about non-interactive shells though, e.g., from your DE's menu).
You're right. I hadn't tested winetricks wmp10 with just the .bashrc setting in quite awhile; I just did, and it's fixed.