I have a large music collection of FLACs and MP3s. I use DLNA and JRemote while at home to stream to various devices. I also use JRemote and Gizmo while away from home (in the car or at work). I have more MP3 than FLAC files, but to reduce the amount of data I have to use while away from home, I've duplicated my FLACs as MP3s and customized my library views and/or playlists to filter to only MP3. At home, I prefer to listen to lossless audio because my network can handle it. Now I'm starting to run into having to have way too much storage (a total of about 3.5TB!). If I can get rid of my duplicate MP3s, I will free up about 800GB of space (for more music - yeah!).
So, after a long-winded preface, how can I set up MC to transcode FLACs to MP3 only when accessing them remotely (either Gizmo or JRemote)? I've set up different DLNA servers to access FLACs, 24bit audio and HD movies from different devices at home (HD TVs, Sony receiver, etc).