I have just ported fMSX 3.4 to UIQ3 smartphones from Sony Ericsson and Motorola. You can get it for FREE here:

http://fms.komkon.org/EmuSymbian/

Unfortunately, I only have Motorola Z8 phone to test fMSX on. Thus, I would like to ask people with Sony Ericsson phones to try running the application and tell me of encountered problems either via email or by posting to this discussion group:

http://groups.google.com/group/emul8/

In related news, I have also released fMSX 3.4.1 for S60e3 phones from Nokia. The update fixes problems displaying high resolution MSX screen modes on low resolution phone screens.