I have tried PocketMusic on my HP2210 with a cassette adaptor thru my car stereo for MP3 playback and like the result.
However I do not think it is a viable soliution for me because I use a GPS which itself links to the System Volume as does PocketMusic. The result is the GPS volume is way too high for reasonable music playback. If I turn the gps/system volme down then with the MP3 at its highest its volume is still too low.
Does anybody have any ideas as to a plug in that can grab the output from an application and adjust inependently. FYI I have the same problem with PocketPlayer and WMP, so unless there is an alternative player or a solution I really only have a non satisfactory answer such as turn off GPS volume which rather defeats the object.